diff --git a/tools/CustomMSBuild/Versioning.props b/tools/CustomMSBuild/Versioning.props
index d106aca464..0a971dec5a 100644
--- a/tools/CustomMSBuild/Versioning.props
+++ b/tools/CustomMSBuild/Versioning.props
@@ -4,7 +4,7 @@
   <PropertyGroup>
     <VersionMajor Condition="'$(VersionMajor)' == ''">7</VersionMajor>
     <VersionMinor Condition="'$(VersionMinor)' == ''">21</VersionMinor>
-    <VersionBuildNumber Condition="'$(VersionBuildNumber)' == ''">3</VersionBuildNumber>
+    <VersionBuildNumber Condition="'$(VersionBuildNumber)' == ''">4</VersionBuildNumber>
     <VersionRelease Condition="'$(VersionRelease)' == ''"></VersionRelease>
   </PropertyGroup>