diff --git a/src/Twilio/Twilio.csproj b/src/Twilio/Twilio.csproj
index 909d89c9a..eca188c9b 100644
--- a/src/Twilio/Twilio.csproj
+++ b/src/Twilio/Twilio.csproj
@@ -24,6 +24,10 @@
     <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.4' ">1.6.1</NetStandardImplicitPackageVersion>
     <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard2.0' ">2.0.0</NetStandardImplicitPackageVersion>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>TwilioStrongNameKey.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
diff --git a/src/Twilio/TwilioStrongNameKey.snk b/src/Twilio/TwilioStrongNameKey.snk
new file mode 100644
index 000000000..a14553015
Binary files /dev/null and b/src/Twilio/TwilioStrongNameKey.snk differ
diff --git a/test/Twilio.Test/Twilio.Test.csproj b/test/Twilio.Test/Twilio.Test.csproj
index 92a299147..ad8dfd283 100644
--- a/test/Twilio.Test/Twilio.Test.csproj
+++ b/test/Twilio.Test/Twilio.Test.csproj
@@ -5,6 +5,8 @@
     <TargetFrameworks>netcoreapp2.0;net451;net35</TargetFrameworks>
     <RuntimeIdentifier Condition=" '$(TargetFramework)' == 'net451' ">win7-x86</RuntimeIdentifier>
     <RuntimeIdentifier Condition=" '$(TargetFramework)' == 'net35' ">win7-x86</RuntimeIdentifier>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>TwilioTestStrongNameKey.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="NUnit" Version="3.6.0" />
diff --git a/test/Twilio.Test/TwilioTestStrongNameKey.snk b/test/Twilio.Test/TwilioTestStrongNameKey.snk
new file mode 100644
index 000000000..60b1bfc13
Binary files /dev/null and b/test/Twilio.Test/TwilioTestStrongNameKey.snk differ