diff --git a/src/SendGrid/SendGrid.csproj b/src/SendGrid/SendGrid.csproj
index b0575a991..d1460620c 100644
--- a/src/SendGrid/SendGrid.csproj
+++ b/src/SendGrid/SendGrid.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <VersionPrefix>9.20.0</VersionPrefix>
+    <VersionPrefix>9.21.0</VersionPrefix>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net452;net40</TargetFrameworks>
     <PlatformTarget>anycpu</PlatformTarget>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>