diff --git a/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj b/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
index 34195cd5..e0f03de2 100644
--- a/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
+++ b/CredentialProvider.Microsoft/CredentialProvider.Microsoft.csproj
@@ -55,5 +55,8 @@
     <FilesToSign Include="$(OutDir)$(TargetFileName)" Authenticode="Microsoft400" StrongName="StrongName" />
     <FilesToSign Include="$(IntermediateOutputPath)$(TargetFileName)" Authenticode="Microsoft400" StrongName="StrongName" />
     <FilesToSign Include="$(IntermediateOutputPath)apphost.exe" Condition=" '$(UseAppHost)' == 'true' " Authenticode="Microsoft400" />
+    <!-- 3rd-party NuGet dependencies -->
+    <FilesToSign Include="$(OutDir)Newtonsoft.Json.dll" Authenticode="3PartySHA2" />
+    <FilesToSign Include="$(OutDir)PowerArgs.dll" Authenticode="3PartySHA2" />
   </ItemGroup>
 </Project>