diff --git a/ProjectTemplates/AspNetCoreMicrosoftIdentityWebProjectTemplates.csproj b/ProjectTemplates/AspNetCoreMicrosoftIdentityWebProjectTemplates.csproj
index 7c6ee0ce1..381f537b2 100644
--- a/ProjectTemplates/AspNetCoreMicrosoftIdentityWebProjectTemplates.csproj
+++ b/ProjectTemplates/AspNetCoreMicrosoftIdentityWebProjectTemplates.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <!--This should be passed from the VSTS build-->
-    <ClientSemVer Condition="'$(ClientSemVer)' == ''">1.19.0</ClientSemVer>
+    <ClientSemVer Condition="'$(ClientSemVer)' == ''">1.21.0</ClientSemVer>
     <!--This will generate AssemblyVersion, AssemblyFileVersion and AssemblyInformationVersion-->
     <PackageVersion>$(ClientSemVer)</PackageVersion>
 
diff --git a/ProjectTemplates/test-aspnet-templates-from-nuget.bat b/ProjectTemplates/test-aspnet-templates-from-nuget.bat
index e8831c3a1..27b63aa1c 100644
--- a/ProjectTemplates/test-aspnet-templates-from-nuget.bat
+++ b/ProjectTemplates/test-aspnet-templates-from-nuget.bat
@@ -1,6 +1,6 @@
 echo "Ensure ClientSemVer"
 if "%ClientSemVer%" == "" (
-set ClientSemVer=1.20.0
+set ClientSemVer=1.21.0
 )
 
 REM: This is to test Microsoft.Identity.Web templates
diff --git a/ProjectTemplates/test-templates-from-nuget.bat b/ProjectTemplates/test-templates-from-nuget.bat
index 2ffc95294..a04e36d09 100644
--- a/ProjectTemplates/test-templates-from-nuget.bat
+++ b/ProjectTemplates/test-templates-from-nuget.bat
@@ -1,6 +1,6 @@
 echo "Ensure ClientSemVer"
 if "%ClientSemVer%" == "" (
-set ClientSemVer=1.20.0
+set ClientSemVer=1.21.0
 )
 
 REM: This is to test Microsoft.Identity.Web templates
diff --git a/ProjectTemplates/test-templates.bat b/ProjectTemplates/test-templates.bat
index ae064e29b..33f52d63d 100644
--- a/ProjectTemplates/test-templates.bat
+++ b/ProjectTemplates/test-templates.bat
@@ -1,6 +1,6 @@
 echo "Ensure ClientSemVer"
 if "%ClientSemVer%" == "" (
-set ClientSemVer=1.20.0
+set ClientSemVer=1.21.0
 )
 Set TemplateNugetPackageName="Microsoft.Identity.Web.ProjectTemplates"
 
diff --git a/TESTING.md b/TESTING.md
index 83e7b9285..163a5c05f 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -34,7 +34,7 @@ In a Developer Command Prompt:
 
 3. Set the version of the templates to test.
 
-   `Set ClientSemVer=1.20.0`
+   `Set ClientSemVer=1.21.0`
 
 4. In ProjectTemplates open the Configuration.json file and add the client secrets (or your own config file) .
 
@@ -73,7 +73,7 @@ In a Developer Command Prompt:
 
 2. Set the version of the templates to test.
 
-   `Set ClientSemVer=1.20.0`
+   `Set ClientSemVer=1.21.0`
 
 3. Add client secrets to the `ProjectTemplates\Configuration.json` file