diff --git a/test/csharp/Properties/AssemblyInfo.cs b/test/csharp/Properties/AssemblyInfo.cs
index b1101a1..d7e04b5 100644
--- a/test/csharp/Properties/AssemblyInfo.cs
+++ b/test/csharp/Properties/AssemblyInfo.cs
@@ -51,5 +51,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.12.0.0")]
+[assembly: AssemblyFileVersion("0.12.0.0")]
diff --git a/test/csharp/ThriftTest.csproj b/test/csharp/ThriftTest.csproj
index 65c0daf..363627f 100644
--- a/test/csharp/ThriftTest.csproj
+++ b/test/csharp/ThriftTest.csproj
@@ -46,7 +46,7 @@
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
+    <ApplicationVersion>0.12.0.%2a</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
   </PropertyGroup>
@@ -138,4 +138,4 @@
 "$(ProjectDir)\..\..\compiler\cpp\thrift.exe" --gen csharp -o %25SHORT_DIR%25 %25THRIFT_SHORT%25
 $(MSBuildToolsPath)\Csc.exe /t:library /out:"$(ProjectDir)ThriftImpl.dll" /recurse:"$(ProjectDir)gen-csharp"\* /reference:"$(ProjectDir)..\..\lib\csharp\bin\Debug\Thrift.dll"</PreBuildEvent>
   </PropertyGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/dart/test_client/pubspec.yaml b/test/dart/test_client/pubspec.yaml
index a91aa45..63428b7 100644
--- a/test/dart/test_client/pubspec.yaml
+++ b/test/dart/test_client/pubspec.yaml
@@ -16,7 +16,7 @@
 # under the License.
 
 name: thrift_test_client
-version: 1.0.0-dev
+version: 0.12.0
 description: A client integration test for the Dart Thrift library
 author: Apache Thrift Developers <dev@thrift.apache.org>
 homepage: http://thrift.apache.org
diff --git a/test/erl/src/thrift_test.app.src b/test/erl/src/thrift_test.app.src
index 7896a95..f166cc4 100644
--- a/test/erl/src/thrift_test.app.src
+++ b/test/erl/src/thrift_test.app.src
@@ -22,7 +22,7 @@
   {description, "Thrift cross language test"},
 
   % The version of the applicaton
-  {vsn, "1.0.0-dev"},
+  {vsn, "0.12.0"},
 
   % All modules used by the application.
   {modules, [