diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a38834494..514117a5f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -153,7 +153,10 @@ jobs:
       - name: Install .NET SDK
         uses: actions/setup-dotnet@v3
         with:
-          dotnet-version: 7.x.x
+          # .NET 5 is deprecated and removed from GitHub Actions, we need to manually install it
+          dotnet-version: |
+            5.x.x
+            7.x.x
 
       - name: Setup MSBuild
         uses: microsoft/setup-msbuild@v1.1.2
diff --git a/EasyPost/EasyPost.csproj b/EasyPost/EasyPost.csproj
index 3b48d2dae..d592835c3 100644
--- a/EasyPost/EasyPost.csproj
+++ b/EasyPost/EasyPost.csproj
@@ -45,8 +45,10 @@
     <SignAssembly>false</SignAssembly>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
-    <SignAssembly>false</SignAssembly>
-    <!-- We manually sign the DLLs later -->
+    <!-- Strong-name the assembly, required for .NET Framework compatibility -->
+    <SignAssembly>true</SignAssembly>
+    <DelaySign>true</DelaySign>
+    <AssemblyOriginatorKeyFile>..\EasyPostNETStrongNameSigning.pub</AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <PropertyGroup>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
@@ -61,9 +63,9 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.md">
+      <Link>README.md</Link>
       <Pack>true</Pack>
       <PackagePath>/</PackagePath>
-      <Link>README.md</Link>
     </None>
   </ItemGroup>
 
diff --git a/EasyPostNETStrongNameSigning.pub b/EasyPostNETStrongNameSigning.pub
new file mode 100644
index 000000000..26cb33c26
Binary files /dev/null and b/EasyPostNETStrongNameSigning.pub differ
diff --git a/Makefile b/Makefile
index 7fa74fda9..a6ec526f1 100644
--- a/Makefile
+++ b/Makefile
@@ -38,13 +38,6 @@ docs:
 format:
 	dotnet dotnet-format --no-restore
 
-## install-cert - Install the PFX certificate to your system (Windows only)
-# @parameters:
-# cert= - The certificate to use for signing the built assets.
-# pass= - The password for the certificate.
-install-cert:
-	scripts\install_cert.bat ${cert} ${pass}
-
 ## install-tools - Install required dotnet tools
 install-tools:
 	dotnet new tool-manifest || exit 0
@@ -67,10 +60,11 @@ lint-scripts:
 
 ## prep-release - Build, sign and package the project for distribution, signing with the provided certificate (Windows only)
 # @parameters:
-# cert= - The certificate to use for signing the built assets.
-# pass= - The password for the certificate.
+# sncert= - The strong-name certificate to use for signing the built assets.
+# cert= - The authenticity certificate to use for signing the built assets.
+# pass= - The password for the authenticity certificate.
 prep-release:
-	scripts\build_release_nuget.bat EasyPost ${cert} ${pass} EasyPost Release
+	scripts\build_release_nuget.bat EasyPost ${sncert} ${cert} ${pass} EasyPost Release
 
 ## publish - Publish a specific NuGet file to nuget.org (Windows only)
 # @parameters:
@@ -102,14 +96,6 @@ setup-win:
 setup-unix:
 	bash scripts/setup.sh
 
-## sign - Sign all generated DLLs and NuGet packages with the provided certificate (Windows only)
-# @parameters:
-# cert= - The certificate to use for signing the built assets.
-# pass= - The password for the certificate.
-sign:
-	install-cert cert=${cert} pass=${pass}
-	scripts\sign_assemblies.bat ${cert} ${pass} EasyPost
-
 ## test - Test the project
 test:
 	dotnet test
@@ -125,4 +111,4 @@ test-fw:
 uninstall-scanner:
 	dotnet tool uninstall security-scan
 
-.PHONY: help build build-test-fw build-prod clean coverage coverage-check docs format install-cert install-tools install lint lint-scripts pre-release publish-all publish release restore scan setup-win setup-unix sign test test-fw uninstall-scanner
+.PHONY: help build build-test-fw build-prod clean coverage coverage-check docs format install-tools install lint lint-scripts pre-release publish-all publish release restore scan setup-win setup-unix test test-fw uninstall-scanner
diff --git a/scripts/build_release_nuget.bat b/scripts/build_release_nuget.bat
index ddf66070d..e4155f729 100644
--- a/scripts/build_release_nuget.bat
+++ b/scripts/build_release_nuget.bat
@@ -11,28 +11,29 @@
 
 :: Parse command line arguments
 SET projectName=%1
-SET certFile=%2
-SET certPass=%3
-SET containerName=%4
-SET buildMode=%5
+SET strongNameCertFile=%2
+SET authCertFile=%3
+SET authCertPass=%4
+SET containerName=%5
+SET buildMode=%6
 
 :: Delete old files
 CALL "scripts\delete_old_assemblies.bat"
 
-:: Install certificate (needed to automate signing later on)
-CALL "scripts\install_cert.bat" %certFile% %certPass% %containerName% || GOTO :commandFailed
-
 :: Restore dependencies and build solution
 CALL "scripts\build_project.bat" %buildMode% || GOTO :commandFailed
 
-:: Sign the DLLs
-CALL "scripts\sign_dlls.bat" %certFile% %certPass% %containerName% || GOTO :commandFailed
+:: Strong-name the DLLs
+CALL "scripts\strong_name_dlls.bat" %strongNameCertFile% || GOTO :commandFailed
+
+:: Sign the DLLs for authenticity
+CALL "scripts\sign_dlls.bat" %authCertFile% %authCertPass% || GOTO :commandFailed
 
 :: Package the DLLs in a NuGet package (will fail if DLLs are missing)
 CALL "scripts\pack_nuget.bat" %projectName% || GOTO :commandFailed
 
-:: Sign the NuGet package
-CALL "scripts\sign_nuget.bat" %certFile% %certPass% || GOTO :commandFailed
+:: Sign the NuGet package for authenticity
+CALL "scripts\sign_nuget.bat" %authCertFile% %authCertPass% || GOTO :commandFailed
 SET nugetFileName=
 FOR /R %%F IN (*.nupkg) DO (
     SET nugetFileName="%%F"
diff --git a/scripts/install_cert.bat b/scripts/install_cert.bat
deleted file mode 100644
index a55f7e16a..000000000
--- a/scripts/install_cert.bat
+++ /dev/null
@@ -1,28 +0,0 @@
-:: This script will install a provided PFX certificate to the system.
-
-:: Requirements:
-:: - dotnet is installed on the machine and is accessible everywhere (added to PATH) (might be in C:\Program Files\dotnet)
-:: - SnInstallPfx (https://github.com/honzajscz/SnInstallPfx) is installed on the machine and is accessible everywhere (added to PATH)
-
-@ECHO OFF
-
-:: Parse command line arguments
-SET certFile=%1
-SET certPass=%2
-SET containerName=%3
-
-:: Install certificate
-@ECHO:
-@ECHO (Re-)Installing certificate to system...
-sn -d %containerName%
-SnInstallPfx %certFile% %certPass% %containerName% || GOTO :commandFailed
-
-EXIT /B 0
-
-:commandFailed
-@ECHO Command failed.
-GOTO :exitWithError
-
-:exitWithError
-@ECHO Exiting...
-EXIT /B 1
diff --git a/scripts/sign_dlls.bat b/scripts/sign_dlls.bat
index e52fd01a1..faaed8971 100644
--- a/scripts/sign_dlls.bat
+++ b/scripts/sign_dlls.bat
@@ -1,8 +1,7 @@
-:: This script will find and sign any DLLs with a provided PFX certificate
+:: This script will find and sign any DLLs with a provided PFX certificate for authenticity
 
 :: Requirements:
 :: - dotnet is installed on the machine and is accessible everywhere (added to PATH) (might be in C:\Program Files\dotnet)
-:: - sn.exe is installed on the machine and is accessible everywhere (added to PATH)
 :: - signtool is installed on the machine and is accessible everywhere (added to PATH) (might be in C:\Program Files (x86)\Windows Kits\10\bin\10.0.18362.0\x64)
 
 @ECHO OFF
@@ -10,15 +9,11 @@
 :: Parse command line arguments
 SET certFile=%1
 SET certPass=%2
-SET containerName=%3
 
-:: Sign all DLLs found in the lib folder
+:: Sign all DLLs found in the lib folder with our certificate to guarantee authenticity
 @ECHO:
-@ECHO Signing DLLs with certificate...
+@ECHO Signing DLLs with %certFile% for authenticity...
 FOR /R "lib" %%F IN (*.dll) DO (
-    REM We need to run the DLLs through both sn.exe and signtool to get complete the signing process
-    REM sn erroneously triggers command failed if we put a fallback on this
-    sn -Rca "%%F" %containerName%
     signtool sign /f %certFile% /p %certPass% /v /tr http://timestamp.digicert.com?alg=sha256 /td SHA256 /fd SHA256 "%%F" || GOTO :commandFailed
 )
 
diff --git a/scripts/sign_nuget.bat b/scripts/sign_nuget.bat
index 4b109c469..c7190c3bf 100644
--- a/scripts/sign_nuget.bat
+++ b/scripts/sign_nuget.bat
@@ -1,4 +1,4 @@
-:: This script will find and sign any NuGet packages with a provided PFX certificate
+:: This script will find and sign any NuGet packages with a provided PFX certificate for authenticity
 
 :: Requirements:
 :: - NuGet is installed on the machine and is accessible everywhere (added to PATH)
@@ -9,9 +9,9 @@
 SET certFile=%1
 SET certPass=%2
 
-:: Sign all NuGet packages found
+:: Sign all NuGet packages found with our certificate to guarantee authenticity
 @ECHO:
-@ECHO Signing NuGet package with %certFile%...
+@ECHO Signing NuGet package with %certFile% for authenticity...
 :: Should only be one .nupkg file at this point, since we deleted the old ones
 FOR /R %%F IN (*.nupkg) DO (
     nuget sign "%%F" -Timestamper http://timestamp.digicert.com -CertificatePath "%certFile%" -CertificatePassword "%certPass%" || GOTO :commandFailed
diff --git a/scripts/strong_name_dlls.bat b/scripts/strong_name_dlls.bat
new file mode 100644
index 000000000..4d44c209d
--- /dev/null
+++ b/scripts/strong_name_dlls.bat
@@ -0,0 +1,28 @@
+:: This script will find and finish strong-naming any DLLs with a provided PFX certificate
+
+:: Requirements:
+:: - dotnet is installed on the machine and is accessible everywhere (added to PATH) (might be in C:\Program Files\dotnet)
+:: - sn.exe is installed on the machine and is accessible everywhere (added to PATH)
+
+@ECHO OFF
+
+:: Parse command line arguments
+SET certFile=%1
+
+:: Strong-name all DLLs found in the lib folder
+@ECHO:
+@ECHO Strong-naming (finishing delayed signing) DLLs with %certFile%...
+FOR /R "lib" %%F IN (*.dll) DO (
+    REM sn erroneously triggers command failed if we put a fallback on this
+    sn -Ra "%%F" %certFile%
+)
+
+EXIT /B 0
+
+:commandFailed
+@ECHO Command failed.
+GOTO :exitWithError
+
+:exitWithError
+@ECHO Exiting...
+EXIT /B 1