diff --git a/CHANGES.md b/CHANGES.md
index 4d880fdc5..01635ce59 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -10,7 +10,7 @@
   - Windows (x86/amd64): <https://ci.appveyor.com/project/libgit2/libgit2sharp>
   - Linux/Mac OS X: <https://travis-ci.org/libgit2/libgit2sharp>
 
-## v0.23 + 1
+## v0.23.1 + 1
 
 ### Additions
 
@@ -18,6 +18,13 @@
 
 ### Fixes
 
+## v0.23.1 - ([diff](https://github.com/libgit2/libgit2sharp/compare/v0.23..v0.23.1))
+
+### Fixes
+
+ - Update to libgit2 0.25.1 which includes security fixes for smart
+   protocol parsing and TLS certificate validity check callbacks.
+
 ## v0.23 - ([diff](https://github.com/libgit2/libgit2sharp/compare/v0.22..v0.23))
 
 ### Additions
diff --git a/LibGit2Sharp/LibGit2Sharp.csproj b/LibGit2Sharp/LibGit2Sharp.csproj
index 6156af63b..884261213 100644
--- a/LibGit2Sharp/LibGit2Sharp.csproj
+++ b/LibGit2Sharp/LibGit2Sharp.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\LibGit2Sharp.NativeBinaries.1.0.163\build\LibGit2Sharp.NativeBinaries.props" Condition="Exists('..\packages\LibGit2Sharp.NativeBinaries.1.0.163\build\LibGit2Sharp.NativeBinaries.props')" />
+  <Import Project="..\packages\LibGit2Sharp.NativeBinaries.1.0.164\build\LibGit2Sharp.NativeBinaries.props" Condition="Exists('..\packages\LibGit2Sharp.NativeBinaries.1.0.164\build\LibGit2Sharp.NativeBinaries.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -392,6 +392,6 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\LibGit2Sharp.NativeBinaries.1.0.163\build\LibGit2Sharp.NativeBinaries.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\LibGit2Sharp.NativeBinaries.1.0.163\build\LibGit2Sharp.NativeBinaries.props'))" />
+    <Error Condition="!Exists('..\packages\LibGit2Sharp.NativeBinaries.1.0.164\build\LibGit2Sharp.NativeBinaries.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\LibGit2Sharp.NativeBinaries.1.0.164\build\LibGit2Sharp.NativeBinaries.props'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/LibGit2Sharp/Properties/AssemblyInfo.cs b/LibGit2Sharp/Properties/AssemblyInfo.cs
index 34c8f06bd..0a86aca08 100644
--- a/LibGit2Sharp/Properties/AssemblyInfo.cs
+++ b/LibGit2Sharp/Properties/AssemblyInfo.cs
@@ -42,6 +42,6 @@
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 
-[assembly: AssemblyVersion("0.23.0")]
-[assembly: AssemblyFileVersion("0.23.0")]
-[assembly: AssemblyInformationalVersion("0.23.0-dev00000000000000")]
+[assembly: AssemblyVersion("0.23.1")]
+[assembly: AssemblyFileVersion("0.23.1")]
+[assembly: AssemblyInformationalVersion("0.23.1-dev00000000000000")]
diff --git a/LibGit2Sharp/packages.config b/LibGit2Sharp/packages.config
index db6ebf4c3..541e78d11 100644
--- a/LibGit2Sharp/packages.config
+++ b/LibGit2Sharp/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="LibGit2Sharp.NativeBinaries" version="1.0.163" targetFramework="net40" allowedVersions="[1.0.163]" />
-</packages>
\ No newline at end of file
+  <package id="LibGit2Sharp.NativeBinaries" version="1.0.164" targetFramework="net40" allowedVersions="[1.0.164]" />
+</packages>