diff --git a/.github/workflows/manual_release_prep.yml b/.github/workflows/manual_release_prep.yml
index a6402824c..993ffccc4 100644
--- a/.github/workflows/manual_release_prep.yml
+++ b/.github/workflows/manual_release_prep.yml
@@ -15,11 +15,11 @@ jobs:
         uses: actions/setup-dotnet@v5
         with:
           dotnet-version: |
-            5.x.x
             6.x.x
             7.x.x
             8.x.x
             9.x.x
+            10.x.x
 
       - name: Setup Nuget
         uses: NuGet/setup-nuget@v2
@@ -63,10 +63,10 @@ jobs:
 
       - name: Build and Sign NuGet package
         run: |
-          call scripts\win\build_release_nuget.bat EasyPost EasyPostNETStrongNameSigning.snk "${{ secrets.SM_CODE_SIGNING_CERT_SHA1_HASH }}" Release
+          call scripts\win\build_release_nuget.bat EasyPost EasyPostNETStrongNameSigning.snk "${{ secrets.SM_CODE_SIGNING_CERT_SHA1_HASH }}" "${{ secrets.SM_CODE_SIGNING_CERT_SHA256_HASH }}" Release
         shell: cmd
 
       - name: Upload NuGet package to Action output
         uses: actions/upload-artifact@v4
         with:
-          path: "*.nupkg"
+          path: '*.nupkg'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 037880006..794b8eab7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,11 +16,11 @@ jobs:
         uses: actions/setup-dotnet@v5
         with:
           dotnet-version: |
-            5.x.x
             6.x.x
             7.x.x
             8.x.x
             9.x.x
+            10.x.x
 
       - name: Setup Nuget
         uses: NuGet/setup-nuget@v2
@@ -64,7 +64,7 @@ jobs:
 
       - name: Build and Sign NuGet package
         run: |
-          call scripts\win\build_release_nuget.bat EasyPost EasyPostNETStrongNameSigning.snk "${{ secrets.SM_CODE_SIGNING_CERT_SHA1_HASH }}" Release
+          call scripts\win\build_release_nuget.bat EasyPost EasyPostNETStrongNameSigning.snk "${{ secrets.SM_CODE_SIGNING_CERT_SHA1_HASH }}" "${{ secrets.SM_CODE_SIGNING_CERT_SHA256_HASH }}" Release
         shell: cmd
 
       - name: Publish to NuGet
@@ -73,5 +73,5 @@ jobs:
       - name: Upload NuGet package to release
         uses: AButler/upload-release-assets@v3.0.1
         with:
-          files: "*.nupkg"
+          files: '*.nupkg'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/scripts/win/build_release_nuget.bat b/scripts/win/build_release_nuget.bat
index 8965c2a94..0fc8f9d26 100644
--- a/scripts/win/build_release_nuget.bat
+++ b/scripts/win/build_release_nuget.bat
@@ -11,8 +11,9 @@
 :: Parse command line arguments
 SET projectName=%1
 SET strongNameCertFile=%2
-SET authCertFingerprint=%3
-SET buildMode=%4
+SET authCertSha1Fingerprint=%3
+SET authCertSha256Fingerprint=%4
+SET buildMode=%5
 
 :: Delete old files
 CALL "scripts\win\delete_old_assemblies.bat"
@@ -24,13 +25,13 @@ CALL "scripts\win\build_project.bat" %buildMode% || GOTO :commandFailed
 CALL "scripts\win\strong_name_dlls.bat" %strongNameCertFile% || GOTO :commandFailed
 
 :: Sign the DLLs for authenticity
-CALL "scripts\win\sign_dlls.bat" %authCertFingerprint% || GOTO :commandFailed
+CALL "scripts\win\sign_dlls.bat" %authCertSha1Fingerprint% || GOTO :commandFailed
 
 :: Package the DLLs in a NuGet package (will fail if DLLs are missing)
 CALL "scripts\win\pack_nuget.bat" %projectName% || GOTO :commandFailed
 
 :: Sign the NuGet package for authenticity
-CALL "scripts\win\sign_nuget.bat" %authCertFingerprint% || GOTO :commandFailed
+CALL "scripts\win\sign_nuget.bat" %authCertSha256Fingerprint% || GOTO :commandFailed
 SET nugetFileName=
 FOR /R %%F IN (*.nupkg) DO (
     SET nugetFileName="%%F"