diff --git a/java-network-security/google-cloud-network-security-bom/pom.xml b/java-network-security/google-cloud-network-security-bom/pom.xml
index 553643eb1cba..d5173c227f3b 100644
--- a/java-network-security/google-cloud-network-security-bom/pom.xml
+++ b/java-network-security/google-cloud-network-security-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-network-security-bom</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -56,27 +56,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-network-security</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-network-security-v1beta1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-network-security-v1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-network-security-v1beta1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-network-security-v1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/java-network-security/google-cloud-network-security/pom.xml b/java-network-security/google-cloud-network-security/pom.xml
index a475727418e3..bb7a90dda1c9 100644
--- a/java-network-security/google-cloud-network-security/pom.xml
+++ b/java-network-security/google-cloud-network-security/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-network-security</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   <packaging>jar</packaging>
   <name>Google Network Security API</name>
   <url>https://github.com/googleapis/java-network-security</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-network-security-parent</artifactId>
-    <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+    <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-network-security</site.installationModule>
diff --git a/java-network-security/grpc-google-cloud-network-security-v1/pom.xml b/java-network-security/grpc-google-cloud-network-security-v1/pom.xml
index 99ace4bc4d06..82aa58df169c 100644
--- a/java-network-security/grpc-google-cloud-network-security-v1/pom.xml
+++ b/java-network-security/grpc-google-cloud-network-security-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-network-security-v1</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
   <name>grpc-google-cloud-network-security-v1</name>
   <description>GRPC library for google-cloud-network-security</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-network-security-parent</artifactId>
-    <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+    <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-network-security/grpc-google-cloud-network-security-v1beta1/pom.xml b/java-network-security/grpc-google-cloud-network-security-v1beta1/pom.xml
index 3c7f7e4fb774..5b4213d54ad4 100644
--- a/java-network-security/grpc-google-cloud-network-security-v1beta1/pom.xml
+++ b/java-network-security/grpc-google-cloud-network-security-v1beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-network-security-v1beta1</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
   <name>grpc-google-cloud-network-security-v1beta1</name>
   <description>GRPC library for google-cloud-network-security</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-network-security-parent</artifactId>
-    <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+    <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-network-security/pom.xml b/java-network-security/pom.xml
index 322a9052a98c..f16deea91b92 100644
--- a/java-network-security/pom.xml
+++ b/java-network-security/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-network-security-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   <name>Google Network Security API Parent</name>
   <url>https://github.com/googleapis/java-network-security</url>
   <description>
@@ -69,27 +69,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-network-security</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-network-security-v1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-network-security-v1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-network-security-v1beta1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-network-security-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-network-security-v1beta1</artifactId>
-        <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
+        <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
       </dependency>
 
       <dependency>
diff --git a/java-network-security/proto-google-cloud-network-security-v1/pom.xml b/java-network-security/proto-google-cloud-network-security-v1/pom.xml
index b4019fea93d8..7855f6f70f75 100644
--- a/java-network-security/proto-google-cloud-network-security-v1/pom.xml
+++ b/java-network-security/proto-google-cloud-network-security-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-network-security-v1</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1:current} -->
   <name>proto-google-cloud-network-security-v1</name>
   <description>Proto library for google-cloud-network-security</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-network-security-parent</artifactId>
-    <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+    <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-network-security/proto-google-cloud-network-security-v1beta1/pom.xml b/java-network-security/proto-google-cloud-network-security-v1beta1/pom.xml
index f347ffdbb98e..acf3cedd2ae6 100644
--- a/java-network-security/proto-google-cloud-network-security-v1beta1/pom.xml
+++ b/java-network-security/proto-google-cloud-network-security-v1beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-network-security-v1beta1</artifactId>
-  <version>0.6.3</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
+  <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-network-security-v1beta1:current} -->
   <name>proto-google-cloud-network-security-v1beta1</name>
   <description>Proto library for google-cloud-network-security</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-network-security-parent</artifactId>
-    <version>0.6.3</version><!-- {x-version-update:google-cloud-network-security:current} -->
+    <version>0.6.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-network-security:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-network-security/versions.txt b/java-network-security/versions.txt
index 8c00129d12fa..3cd180c9d60b 100644
--- a/java-network-security/versions.txt
+++ b/java-network-security/versions.txt
@@ -1,8 +1,8 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-network-security:0.6.3:0.6.3
-grpc-google-cloud-network-security-v1beta1:0.6.3:0.6.3
-proto-google-cloud-network-security-v1beta1:0.6.3:0.6.3
-proto-google-cloud-network-security-v1:0.6.3:0.6.3
-grpc-google-cloud-network-security-v1:0.6.3:0.6.3
+google-cloud-network-security:0.6.3:0.6.4-SNAPSHOT
+grpc-google-cloud-network-security-v1beta1:0.6.3:0.6.4-SNAPSHOT
+proto-google-cloud-network-security-v1beta1:0.6.3:0.6.4-SNAPSHOT
+proto-google-cloud-network-security-v1:0.6.3:0.6.4-SNAPSHOT
+grpc-google-cloud-network-security-v1:0.6.3:0.6.4-SNAPSHOT