diff --git a/src/ServiceFabric.Mocks/ServiceFabric.Mocks.csproj b/src/ServiceFabric.Mocks/ServiceFabric.Mocks.csproj
index 9059700..2734cb9 100644
--- a/src/ServiceFabric.Mocks/ServiceFabric.Mocks.csproj
+++ b/src/ServiceFabric.Mocks/ServiceFabric.Mocks.csproj
@@ -38,7 +38,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.ServiceFabric.Actors" Version="7.0.1001" />
+    <PackageReference Include="Microsoft.ServiceFabric.Actors" Version="6.1.1436" />
   </ItemGroup>
 
 </Project>
diff --git a/test/ServiceFabric.Mocks.NetCoreTests/ServiceFabric.Mocks.NetCoreTests.csproj b/test/ServiceFabric.Mocks.NetCoreTests/ServiceFabric.Mocks.NetCoreTests.csproj
index e462e2d..9d845a2 100644
--- a/test/ServiceFabric.Mocks.NetCoreTests/ServiceFabric.Mocks.NetCoreTests.csproj
+++ b/test/ServiceFabric.Mocks.NetCoreTests/ServiceFabric.Mocks.NetCoreTests.csproj
@@ -36,7 +36,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.ServiceFabric.Actors" Version="7.0.1001" />
+    <PackageReference Include="Microsoft.ServiceFabric.Actors" Version="6.1.1436" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />