diff --git a/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.csproj b/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.csproj
index ea21aa0bfc..df56fbae56 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder.Autofac/Microsoft.Bot.Builder.Autofac.csproj
@@ -100,7 +100,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder.Autofac/packages.config b/CSharp/Library/Microsoft.Bot.Builder.Autofac/packages.config
index 47fe417ee2..a53f9989d0 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.Autofac/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Builder.Autofac/packages.config
@@ -24,7 +24,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Net.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="net461" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder.Calling/Microsoft.Bot.Builder.Calling.csproj b/CSharp/Library/Microsoft.Bot.Builder.Calling/Microsoft.Bot.Builder.Calling.csproj
index 51b660481a..67775c0545 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.Calling/Microsoft.Bot.Builder.Calling.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder.Calling/Microsoft.Bot.Builder.Calling.csproj
@@ -51,7 +51,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Library/Microsoft.Bot.Builder.Calling/packages.config b/CSharp/Library/Microsoft.Bot.Builder.Calling/packages.config
index 6f6a14bef6..b32a4c3cbc 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.Calling/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Builder.Calling/packages.config
@@ -5,7 +5,7 @@
   <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net46" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/Microsoft.Bot.Builder.FormFlow.Json.csproj b/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/Microsoft.Bot.Builder.FormFlow.Json.csproj
index d046f0b3be..795c34aae5 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/Microsoft.Bot.Builder.FormFlow.Json.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/Microsoft.Bot.Builder.FormFlow.Json.csproj
@@ -89,7 +89,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Numerics" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/packages.config b/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/packages.config
index 6cbecfb530..2e6a32fab7 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Builder.FormFlow.Json/packages.config
@@ -24,7 +24,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Reflection" version="4.3.0" targetFramework="net461" />
   <package id="System.Reflection.Extensions" version="4.3.0" targetFramework="net461" />
   <package id="System.Reflection.Metadata" version="1.4.2" targetFramework="net461" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder.History/Microsoft.Bot.Builder.History.csproj b/CSharp/Library/Microsoft.Bot.Builder.History/Microsoft.Bot.Builder.History.csproj
index ef03245ee4..53523f2846 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.History/Microsoft.Bot.Builder.History.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder.History/Microsoft.Bot.Builder.History.csproj
@@ -44,7 +44,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Security.Cryptography.Algorithms, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
diff --git a/CSharp/Library/Microsoft.Bot.Builder.History/packages.config b/CSharp/Library/Microsoft.Bot.Builder.History/packages.config
index 162f2cd116..3fe6b43c97 100644
--- a/CSharp/Library/Microsoft.Bot.Builder.History/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Builder.History/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder/Microsoft.Bot.Builder.csproj b/CSharp/Library/Microsoft.Bot.Builder/Microsoft.Bot.Builder.csproj
index 4e4073dd8e..c6fcaaad7d 100644
--- a/CSharp/Library/Microsoft.Bot.Builder/Microsoft.Bot.Builder.csproj
+++ b/CSharp/Library/Microsoft.Bot.Builder/Microsoft.Bot.Builder.csproj
@@ -62,7 +62,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
diff --git a/CSharp/Library/Microsoft.Bot.Builder/packages.config b/CSharp/Library/Microsoft.Bot.Builder/packages.config
index a03769d29b..02d973583b 100644
--- a/CSharp/Library/Microsoft.Bot.Builder/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Builder/packages.config
@@ -6,7 +6,7 @@
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="NuGet.CommandLine" version="3.5.0" targetFramework="net461" developmentDependency="true" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Library/Microsoft.Bot.Connector.Abstractions/project.json b/CSharp/Library/Microsoft.Bot.Connector.Abstractions/project.json
index aa72d2f711..34a7a9c60c 100644
--- a/CSharp/Library/Microsoft.Bot.Connector.Abstractions/project.json
+++ b/CSharp/Library/Microsoft.Bot.Connector.Abstractions/project.json
@@ -9,7 +9,7 @@
     "NETStandard.Library": "1.6.1",
     "Newtonsoft.Json": "9.0.1",
     "System.ComponentModel": "4.3.0",
-    "System.Net.Http": "4.3.0",
+    "System.Net.Http": "4.3.1",
     "System.Security.Claims": "4.3.0"
   },
   "frameworks": {
diff --git a/CSharp/Library/Microsoft.Bot.Connector.NetFramework/Microsoft.Bot.Connector.csproj b/CSharp/Library/Microsoft.Bot.Connector.NetFramework/Microsoft.Bot.Connector.csproj
index bac9be24e0..398667bec6 100644
--- a/CSharp/Library/Microsoft.Bot.Connector.NetFramework/Microsoft.Bot.Connector.csproj
+++ b/CSharp/Library/Microsoft.Bot.Connector.NetFramework/Microsoft.Bot.Connector.csproj
@@ -137,7 +137,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Library/Microsoft.Bot.Connector.NetFramework/packages.config b/CSharp/Library/Microsoft.Bot.Connector.NetFramework/packages.config
index 071d51c084..dc97ba2689 100644
--- a/CSharp/Library/Microsoft.Bot.Connector.NetFramework/packages.config
+++ b/CSharp/Library/Microsoft.Bot.Connector.NetFramework/packages.config
@@ -38,7 +38,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Net.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="net461" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/AlarmBot/Microsoft.Bot.Sample.AlarmBot.csproj b/CSharp/Samples/AlarmBot/Microsoft.Bot.Sample.AlarmBot.csproj
index 216f87f062..88ea5dbcbd 100644
--- a/CSharp/Samples/AlarmBot/Microsoft.Bot.Sample.AlarmBot.csproj
+++ b/CSharp/Samples/AlarmBot/Microsoft.Bot.Sample.AlarmBot.csproj
@@ -119,7 +119,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/AlarmBot/packages.config b/CSharp/Samples/AlarmBot/packages.config
index e0f8627cf0..ca09e7d1e7 100644
--- a/CSharp/Samples/AlarmBot/packages.config
+++ b/CSharp/Samples/AlarmBot/packages.config
@@ -9,7 +9,7 @@
   <package id="Microsoft.Net.Compilers" version="1.3.2" targetFramework="net461" developmentDependency="true" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/AnnotatedSandwichBot/Microsoft.Bot.Sample.AnnotatedSandwichBot.csproj b/CSharp/Samples/AnnotatedSandwichBot/Microsoft.Bot.Sample.AnnotatedSandwichBot.csproj
index 1f022e57d0..49ec635fdb 100644
--- a/CSharp/Samples/AnnotatedSandwichBot/Microsoft.Bot.Sample.AnnotatedSandwichBot.csproj
+++ b/CSharp/Samples/AnnotatedSandwichBot/Microsoft.Bot.Sample.AnnotatedSandwichBot.csproj
@@ -148,7 +148,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/AnnotatedSandwichBot/Web.config b/CSharp/Samples/AnnotatedSandwichBot/Web.config
index d6351ca09e..79af3e8115 100644
--- a/CSharp/Samples/AnnotatedSandwichBot/Web.config
+++ b/CSharp/Samples/AnnotatedSandwichBot/Web.config
@@ -64,7 +64,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Security.Cryptography.X509Certificates" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/CSharp/Samples/AnnotatedSandwichBot/packages.config b/CSharp/Samples/AnnotatedSandwichBot/packages.config
index 5b14748954..c6eba6ebb5 100644
--- a/CSharp/Samples/AnnotatedSandwichBot/packages.config
+++ b/CSharp/Samples/AnnotatedSandwichBot/packages.config
@@ -42,7 +42,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Net.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="net461" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/EchoBot/Microsoft.Bot.Sample.EchoBot.csproj b/CSharp/Samples/EchoBot/Microsoft.Bot.Sample.EchoBot.csproj
index a5bac56553..1c4ddc716b 100644
--- a/CSharp/Samples/EchoBot/Microsoft.Bot.Sample.EchoBot.csproj
+++ b/CSharp/Samples/EchoBot/Microsoft.Bot.Sample.EchoBot.csproj
@@ -107,7 +107,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/EchoBot/packages.config b/CSharp/Samples/EchoBot/packages.config
index 6671208bb9..44f9571136 100644
--- a/CSharp/Samples/EchoBot/packages.config
+++ b/CSharp/Samples/EchoBot/packages.config
@@ -11,7 +11,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/PizzaBot/Microsoft.Bot.Sample.PizzaBot.csproj b/CSharp/Samples/PizzaBot/Microsoft.Bot.Sample.PizzaBot.csproj
index d52e8b9006..d367e96212 100644
--- a/CSharp/Samples/PizzaBot/Microsoft.Bot.Sample.PizzaBot.csproj
+++ b/CSharp/Samples/PizzaBot/Microsoft.Bot.Sample.PizzaBot.csproj
@@ -86,7 +86,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/PizzaBot/packages.config b/CSharp/Samples/PizzaBot/packages.config
index abebf6e3e3..a47c9ab0e7 100644
--- a/CSharp/Samples/PizzaBot/packages.config
+++ b/CSharp/Samples/PizzaBot/packages.config
@@ -15,7 +15,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Claims" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleAlarmBot/Microsoft.Bot.Sample.SimpleAlarmBot.csproj b/CSharp/Samples/SimpleAlarmBot/Microsoft.Bot.Sample.SimpleAlarmBot.csproj
index 298d362725..0e76fc91d8 100644
--- a/CSharp/Samples/SimpleAlarmBot/Microsoft.Bot.Sample.SimpleAlarmBot.csproj
+++ b/CSharp/Samples/SimpleAlarmBot/Microsoft.Bot.Sample.SimpleAlarmBot.csproj
@@ -72,7 +72,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleAlarmBot/packages.config b/CSharp/Samples/SimpleAlarmBot/packages.config
index d9ef7f5f88..1186fcfe57 100644
--- a/CSharp/Samples/SimpleAlarmBot/packages.config
+++ b/CSharp/Samples/SimpleAlarmBot/packages.config
@@ -11,7 +11,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleDispatchDialog/Microsoft.Bot.Sample.SimpleDispatchDialog.csproj b/CSharp/Samples/SimpleDispatchDialog/Microsoft.Bot.Sample.SimpleDispatchDialog.csproj
index 3c0c24737a..84789b836c 100644
--- a/CSharp/Samples/SimpleDispatchDialog/Microsoft.Bot.Sample.SimpleDispatchDialog.csproj
+++ b/CSharp/Samples/SimpleDispatchDialog/Microsoft.Bot.Sample.SimpleDispatchDialog.csproj
@@ -56,7 +56,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleDispatchDialog/packages.config b/CSharp/Samples/SimpleDispatchDialog/packages.config
index f5df0e552c..1a525867b2 100644
--- a/CSharp/Samples/SimpleDispatchDialog/packages.config
+++ b/CSharp/Samples/SimpleDispatchDialog/packages.config
@@ -6,7 +6,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net46" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleEchoBot/Microsoft.Bot.Sample.SimpleEchoBot.csproj b/CSharp/Samples/SimpleEchoBot/Microsoft.Bot.Sample.SimpleEchoBot.csproj
index 795a73d79c..297fdabb07 100644
--- a/CSharp/Samples/SimpleEchoBot/Microsoft.Bot.Sample.SimpleEchoBot.csproj
+++ b/CSharp/Samples/SimpleEchoBot/Microsoft.Bot.Sample.SimpleEchoBot.csproj
@@ -70,7 +70,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleEchoBot/packages.config b/CSharp/Samples/SimpleEchoBot/packages.config
index 11b3878a87..c99c9a740a 100644
--- a/CSharp/Samples/SimpleEchoBot/packages.config
+++ b/CSharp/Samples/SimpleEchoBot/packages.config
@@ -10,7 +10,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleFacebookAuthBot/Microsoft.Bot.Sample.SimpleFacebookAuthBot.csproj b/CSharp/Samples/SimpleFacebookAuthBot/Microsoft.Bot.Sample.SimpleFacebookAuthBot.csproj
index f6aaa708ab..a3d349ae83 100644
--- a/CSharp/Samples/SimpleFacebookAuthBot/Microsoft.Bot.Sample.SimpleFacebookAuthBot.csproj
+++ b/CSharp/Samples/SimpleFacebookAuthBot/Microsoft.Bot.Sample.SimpleFacebookAuthBot.csproj
@@ -66,7 +66,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleFacebookAuthBot/packages.config b/CSharp/Samples/SimpleFacebookAuthBot/packages.config
index 9442d13328..2fa6295a4e 100644
--- a/CSharp/Samples/SimpleFacebookAuthBot/packages.config
+++ b/CSharp/Samples/SimpleFacebookAuthBot/packages.config
@@ -9,7 +9,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleIVRBot/Microsoft.Bot.Sample.SimpleIVRBot.csproj b/CSharp/Samples/SimpleIVRBot/Microsoft.Bot.Sample.SimpleIVRBot.csproj
index 72464c9172..da389afaf1 100644
--- a/CSharp/Samples/SimpleIVRBot/Microsoft.Bot.Sample.SimpleIVRBot.csproj
+++ b/CSharp/Samples/SimpleIVRBot/Microsoft.Bot.Sample.SimpleIVRBot.csproj
@@ -74,7 +74,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleIVRBot/packages.config b/CSharp/Samples/SimpleIVRBot/packages.config
index d777f8f03c..80cf6a8b10 100644
--- a/CSharp/Samples/SimpleIVRBot/packages.config
+++ b/CSharp/Samples/SimpleIVRBot/packages.config
@@ -11,7 +11,7 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.3" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Claims" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/SimpleSandwichBot/Microsoft.Bot.Sample.SimpleSandwichBot.csproj b/CSharp/Samples/SimpleSandwichBot/Microsoft.Bot.Sample.SimpleSandwichBot.csproj
index 0a61c30144..5bde24d299 100644
--- a/CSharp/Samples/SimpleSandwichBot/Microsoft.Bot.Sample.SimpleSandwichBot.csproj
+++ b/CSharp/Samples/SimpleSandwichBot/Microsoft.Bot.Sample.SimpleSandwichBot.csproj
@@ -132,7 +132,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/SimpleSandwichBot/Web.config b/CSharp/Samples/SimpleSandwichBot/Web.config
index 129f8ad245..bbbe623d40 100644
--- a/CSharp/Samples/SimpleSandwichBot/Web.config
+++ b/CSharp/Samples/SimpleSandwichBot/Web.config
@@ -64,7 +64,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Security.Cryptography.X509Certificates" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/CSharp/Samples/SimpleSandwichBot/packages.config b/CSharp/Samples/SimpleSandwichBot/packages.config
index 513adb3218..36de62d888 100644
--- a/CSharp/Samples/SimpleSandwichBot/packages.config
+++ b/CSharp/Samples/SimpleSandwichBot/packages.config
@@ -41,7 +41,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Net.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="net461" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Samples/TemplateBot/Microsoft.Bot.Sample.TemplateBot.csproj b/CSharp/Samples/TemplateBot/Microsoft.Bot.Sample.TemplateBot.csproj
index e1bee09e43..2b5c2be374 100644
--- a/CSharp/Samples/TemplateBot/Microsoft.Bot.Sample.TemplateBot.csproj
+++ b/CSharp/Samples/TemplateBot/Microsoft.Bot.Sample.TemplateBot.csproj
@@ -107,7 +107,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Samples/TemplateBot/packages.config b/CSharp/Samples/TemplateBot/packages.config
index 98f74dc39a..5e27f434b0 100644
--- a/CSharp/Samples/TemplateBot/packages.config
+++ b/CSharp/Samples/TemplateBot/packages.config
@@ -30,7 +30,7 @@
   <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq" version="4.3.0" targetFramework="net461" />
   <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Net.Primitives" version="4.3.0" targetFramework="net461" />
   <package id="System.Net.Sockets" version="4.3.0" targetFramework="net461" />
   <package id="System.ObjectModel" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Tests/FormTest/FormTest.csproj b/CSharp/Tests/FormTest/FormTest.csproj
index 0f81d7e84c..5b2c0f7f54 100644
--- a/CSharp/Tests/FormTest/FormTest.csproj
+++ b/CSharp/Tests/FormTest/FormTest.csproj
@@ -75,7 +75,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Tests/FormTest/packages.config b/CSharp/Tests/FormTest/packages.config
index f39847fd8b..620f4e80b2 100644
--- a/CSharp/Tests/FormTest/packages.config
+++ b/CSharp/Tests/FormTest/packages.config
@@ -9,7 +9,7 @@
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
   <package id="System.IO" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
diff --git a/CSharp/Tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj b/CSharp/Tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
index 2c83ed52b2..bd1f452576 100644
--- a/CSharp/Tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
+++ b/CSharp/Tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
@@ -78,7 +78,7 @@
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.Net.Http.4.3.0\lib\net46\System.Net.Http.dll</HintPath>
+      <HintPath>..\..\packages\System.Net.Http.4.3.1\lib\net46\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/CSharp/Tests/Microsoft.Bot.Builder.Tests/packages.config b/CSharp/Tests/Microsoft.Bot.Builder.Tests/packages.config
index 55e0c23b3c..2e2c1752ae 100644
--- a/CSharp/Tests/Microsoft.Bot.Builder.Tests/packages.config
+++ b/CSharp/Tests/Microsoft.Bot.Builder.Tests/packages.config
@@ -12,7 +12,7 @@
   <package id="System.Collections.Immutable" version="1.3.1" targetFramework="net461" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.3.0" targetFramework="net461" />
   <package id="System.IO" version="4.3.0" targetFramework="net461" />
-  <package id="System.Net.Http" version="4.3.0" targetFramework="net461" />
+  <package id="System.Net.Http" version="4.3.1" targetFramework="net461" />
   <package id="System.Reflection.Metadata" version="1.4.2" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />