diff --git a/CHANGELOG.md b/CHANGELOG.md
index caac3d26..3aee1e6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 1.3.9 (08 December 2020)
+- [#550](https://github.com/WireMock-Net/WireMock.Net/pull/550) - WithProxy(...) also use all proxy settings [bug] contributed by [StefH](https://github.com/StefH)
+- [#551](https://github.com/WireMock-Net/WireMock.Net/pull/551) - Add obsolete warning: CSharpCodeMatcher will be moved to a separate NuGet package 'WireMock.Net.Matchers.CSharpCode' [feature] contributed by [StefH](https://github.com/StefH)
+- [#549](https://github.com/WireMock-Net/WireMock.Net/issues/549) - WithProxy(...) does not save the mappings to file [bug]
+
 # 1.3.8 (03 December 2020)
 - [#542](https://github.com/WireMock-Net/WireMock.Net/pull/542) - Create dotnet-wiremock tool [feature] contributed by [StefH](https://github.com/StefH)
 - [#543](https://github.com/WireMock-Net/WireMock.Net/pull/543) - Add support for .NET 5 [feature] contributed by [StefH](https://github.com/StefH)
diff --git a/Directory.Build.props b/Directory.Build.props
index b7c3eec5..d855a9f8 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -4,7 +4,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <VersionPrefix>1.3.8</VersionPrefix>
+    <VersionPrefix>1.3.9</VersionPrefix>
     <PackageReleaseNotes>See CHANGELOG.md</PackageReleaseNotes>
     <PackageIconUrl>https://raw.githubusercontent.com/WireMock-Net/WireMock.Net/master/WireMock.Net-Logo.png</PackageIconUrl>
     <PackageProjectUrl>https://github.com/WireMock-Net/WireMock.Net</PackageProjectUrl>
diff --git a/GitHubReleaseNotes.txt b/GitHubReleaseNotes.txt
index f95db2c6..4bddfa2f 100644
--- a/GitHubReleaseNotes.txt
+++ b/GitHubReleaseNotes.txt
@@ -1,3 +1,3 @@
 https://github.com/StefH/GitHubReleaseNotes
 
-GitHubReleaseNotes --output CHANGELOG.md --skip-empty-releases --exclude-labels question invalid doc --version 1.3.8
\ No newline at end of file
+GitHubReleaseNotes --output CHANGELOG.md --skip-empty-releases --exclude-labels question invalid doc --version 1.3.9
\ No newline at end of file