diff --git a/CHANGELOG.md b/CHANGELOG.md
index 780af47..2bc3795 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+Nothing yet.
+
+## [1.21.2] - 2025-11-29
+
 ### Added
 
 - Implemented `EnvironmentHelper` and tests.
@@ -306,7 +310,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Implemented StringExtensions.
 
-[unreleased]: https://github.com/Logitar/Logitar.NET/compare/v1.21.1...HEAD
+[unreleased]: https://github.com/Logitar/Logitar.NET/compare/v1.21.2...HEAD
+[1.21.2]: https://github.com/Logitar/Logitar.NET/compare/v1.21.1...v1.21.2
 [1.21.1]: https://github.com/Logitar/Logitar.NET/compare/v1.21.0...v1.21.1
 [1.21.0]: https://github.com/Logitar/Logitar.NET/compare/v1.20.4...v1.21.0
 [1.20.4]: https://github.com/Logitar/Logitar.NET/compare/v1.20.3...v1.20.4
diff --git a/src/Logitar/Logitar.csproj b/src/Logitar/Logitar.csproj
index 7093ee0..cb7c86a 100644
--- a/src/Logitar/Logitar.csproj
+++ b/src/Logitar/Logitar.csproj
@@ -15,14 +15,14 @@
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <RepositoryType>git</RepositoryType>
     <RepositoryUrl>https://github.com/Logitar/Logitar.NET</RepositoryUrl>
-    <AssemblyVersion>10.0.1.0</AssemblyVersion>
+    <AssemblyVersion>10.1.0.0</AssemblyVersion>
     <FileVersion>$(AssemblyVersion)</FileVersion>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageRequireLicenseAcceptance>True</PackageRequireLicenseAcceptance>
-    <Version>10.0.1</Version>
+    <Version>10.1.0</Version>
     <NeutralLanguage>en-CA</NeutralLanguage>
     <GenerateDocumentationFile>True</GenerateDocumentationFile>
-    <PackageReleaseNotes>Fixed license year.</PackageReleaseNotes>
+    <PackageReleaseNotes>Implemented environment variable helper methods.</PackageReleaseNotes>
     <PackageTags>logitar net framework</PackageTags>
     <PackageProjectUrl>https://github.com/Logitar/Logitar.NET/tree/dev/src/Logitar</PackageProjectUrl>
   </PropertyGroup>