diff --git a/Src/Support/CommonProjectProperties.xml b/Src/Support/CommonProjectProperties.xml
index b8ce4dcb31..7b86e6239b 100644
--- a/Src/Support/CommonProjectProperties.xml
+++ b/Src/Support/CommonProjectProperties.xml
@@ -2,7 +2,7 @@
 
   <!-- common nupkg information -->
   <PropertyGroup>
-    <Version>1.50.0</Version>
+    <Version>1.51.0</Version>
     <Authors>Google Inc.</Authors>
     <Copyright>Copyright 2017 Google Inc.</Copyright>
     <PackageTags>Google</PackageTags>
diff --git a/features.json b/features.json
index 03e863d210..1306af41e8 100644
--- a/features.json
+++ b/features.json
@@ -1,8 +1,8 @@
 {	
   "language": "csharp",	
   "description": "C# libraries for Google APIs.",	
-  "releaseVersion": "1.50.0", "comment1": "Version of generated package.",	
-  "currentSupportVersion": "1.50.0", "comment2": "Version of support library upon which to depend.",	
+  "releaseVersion": "1.51.0", "comment1": "Version of generated package.",	
+  "currentSupportVersion": "1.51.0", "comment2": "Version of support library upon which to depend.",	
   "pclSupportVersion": "1.25.0", "comment3": "Version of PCL support library.",	
   "net40SupportVersion": "1.10.0", "comment4": "Version of net40 support library.",