diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ed97c3..75ea75b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # OpenKit .NET Changelog
 
-## [Unreleased](https://github.com/Dynatrace/openkit-dotnet/compare/v3.0.0...HEAD)
+## [Unreleased](https://github.com/Dynatrace/openkit-dotnet/compare/v3.1.0...HEAD)
+
+## 3.1.0 [Release date: 2023-06-05]
+[GitHub Releases](https://github.com/Dynatrace/openkit-dotnet/releases/tag/v3.1.0)
 
 ### Added
 - Support for .NET 7.0
diff --git a/Directory.Build.props b/Directory.Build.props
index 5dc6cb7..494aed5 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -7,12 +7,12 @@
     <AssemblyOriginatorKeyFile>../../keys/Dynatrace.OpenKit.NET.snk</AssemblyOriginatorKeyFile>
     <DelaySign>false</DelaySign>
     <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
-    <PackageVersion>3.1.0.0-SNAPSHOT</PackageVersion>
+    <PackageVersion>3.1.0.0</PackageVersion>
     <Title>OpenKit .NET</Title>
     <Authors>Dynatrace LLC</Authors>
     <Company>Dynatrace LLC</Company>
     <Description>Dynatrace OpenKit SDK for .NET</Description>
-    <Copyright>(c) 2016-2022 Dynatrace LLC</Copyright>
+    <Copyright>(c) 2016-2023 Dynatrace LLC</Copyright>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
     <PackageIconUrl>https://assets.dynatrace.com/global/resources/Signet_Logo_RGB_CP_512x512px.png</PackageIconUrl>
     <PackageProjectUrl>https://github.com/Dynatrace/openkit-dotnet</PackageProjectUrl>
diff --git a/docs/supported_versions.md b/docs/supported_versions.md
index 0c78225..4d3dac5 100644
--- a/docs/supported_versions.md
+++ b/docs/supported_versions.md
@@ -9,11 +9,12 @@ Example: Version `1.4.5` supersedes `1.4.4` and therefore only `1.4.5` will be m
 ## Active maintenance
 | Version | Bug fixes          | Security fixes     | Remarks          |
 |---------|:------------------:|:------------------:|------------------|
+| 3.1.x   | :heavy_check_mark: | :heavy_check_mark: |                  |
 | 3.0.x   | :heavy_check_mark: | :heavy_check_mark: |                  |
 | 2.2.X   | :heavy_check_mark: | :heavy_check_mark: |                  |
 | 2.1.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
 | 2.0.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
-| 1.4.X   |        :x:         |        :x:         | Upgrade to 2.2.X |               |
+| 1.4.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
 | 1.3.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
 | 1.2.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
 | 1.1.X   |        :x:         |        :x:         | Upgrade to 2.2.X |
diff --git a/docs/upgrade_guide.md b/docs/upgrade_guide.md
index 09b10ac..d049bcf 100644
--- a/docs/upgrade_guide.md
+++ b/docs/upgrade_guide.md
@@ -1,5 +1,9 @@
 # Upgrade guide for OpenKit .NET
 
+## OpenKit .NET 3.0 to 3.1
+There are no breaking API changes and upgrading is straightforward, by [updating][update] the library
+to the latest 3.1 release.
+
 ## OpenKit .NET 2.2 to 3.0
 Appmon has been removed from OpenKit .NET. If you don't want to replace your AppMon related code, stay on the latest 2.2.x release.
 ### Removed API
diff --git a/src/Dynatrace.OpenKit/Protocol/ProtocolConstants.cs b/src/Dynatrace.OpenKit/Protocol/ProtocolConstants.cs
index 61d35cf..87c98b7 100644
--- a/src/Dynatrace.OpenKit/Protocol/ProtocolConstants.cs
+++ b/src/Dynatrace.OpenKit/Protocol/ProtocolConstants.cs
@@ -19,7 +19,7 @@ namespace Dynatrace.OpenKit.Protocol
     public static class ProtocolConstants
     {
         // version constants
-        public const string OpenKitVersion = "8.257.30100";
+        public const string OpenKitVersion = "8.267.30100";
         public const int ProtocolVersion = 3;
         public const int PlatformTypeOpenKit = 1;
         public const string AgentTechnologyType = "okdotnet";