diff --git a/appengine/channel/pom.xml b/appengine/channel/pom.xml
index 241e87d39b0..c517ee9964b 100644
--- a/appengine/channel/pom.xml
+++ b/appengine/channel/pom.xml
@@ -26,7 +26,7 @@
         <relativePath>..</relativePath>
     </parent>
     <properties>
-        <objectify.version>5.1.16</objectify.version>
+        <objectify.version>5.1.17</objectify.version>
     </properties>
     <!-- [START set_versions] -->
     <prerequisites>
diff --git a/appengine/firebase-tictactoe/pom.xml b/appengine/firebase-tictactoe/pom.xml
index df41b4d25fe..903d3e05872 100644
--- a/appengine/firebase-tictactoe/pom.xml
+++ b/appengine/firebase-tictactoe/pom.xml
@@ -26,7 +26,7 @@
         <relativePath>..</relativePath>
     </parent>
     <properties>
-        <objectify.version>5.1.16</objectify.version>
+        <objectify.version>5.1.17</objectify.version>
         <servlet-api.version>2.5</servlet-api.version>
         <gson.version>2.7</gson.version>
         <guava.version>20.0</guava.version>
diff --git a/appengine/guestbook-objectify/pom.xml b/appengine/guestbook-objectify/pom.xml
index eaf49e4b063..50f5fe28cab 100644
--- a/appengine/guestbook-objectify/pom.xml
+++ b/appengine/guestbook-objectify/pom.xml
@@ -23,7 +23,7 @@
     <groupId>com.example.appengine</groupId>
     <artifactId>appengine-guestbook-objectify</artifactId>
     <properties>
-        <objectify.version>5.1.16</objectify.version>
+        <objectify.version>5.1.17</objectify.version>
         <guava.version>20.0</guava.version>
     </properties>
     <parent>
diff --git a/appengine/multitenancy/pom.xml b/appengine/multitenancy/pom.xml
index e31231e2399..356e152b62d 100644
--- a/appengine/multitenancy/pom.xml
+++ b/appengine/multitenancy/pom.xml
@@ -24,7 +24,7 @@
     <artifactId>appengine-multitenancy</artifactId>
 
     <properties>
-        <objectify.version>5.1.16</objectify.version>
+        <objectify.version>5.1.17</objectify.version>
         <guava.version>20.0</guava.version>
     </properties>
     <parent>