diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 051042d0..4739cc63 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,3 +1,16 @@
+### New in 0.21.1 (released 2016/07/29)
+
+**Features**
+
+Due to a programming error in the tool to generate these release notes, additional
+features were not properly documented for the previous release:
+
+ - Reactions preview API support for issues, issue comments, commit comments and PR comments - #1335, #1341, #1405 via @maddin2016, @alfhenrik 
+ - Repository Invitation preview API support - #1410 via @maddin2016
+ - Added new fields for signature verification to Git Data Commit API - #1398 via @Sarmad93
+
+No additional code changes have been made to this release.
+
 ### New in 0.21.0 (released 2016/07/29)
 
 **Features**
diff --git a/SolutionInfo.cs b/SolutionInfo.cs
index 034d9815..afbd864d 100644
--- a/SolutionInfo.cs
+++ b/SolutionInfo.cs
@@ -3,12 +3,12 @@ using System.Reflection;
 using System.Runtime.InteropServices;
 
 [assembly: AssemblyProductAttribute("Octokit")]
-[assembly: AssemblyVersionAttribute("0.21.0")]
-[assembly: AssemblyFileVersionAttribute("0.21.0")]
+[assembly: AssemblyVersionAttribute("0.21.1")]
+[assembly: AssemblyFileVersionAttribute("0.21.1")]
 [assembly: ComVisibleAttribute(false)]
 namespace System {
     internal static class AssemblyVersionInformation {
-        internal const string Version = "0.21.0";
-        internal const string InformationalVersion = "0.21.0";
+        internal const string Version = "0.21.1";
+        internal const string InformationalVersion = "0.21.1";
     }
 }