diff --git a/.github/release-please-manifest.json b/.github/release-please-manifest.json
index 98c6b0a..9ec091c 100644
--- a/.github/release-please-manifest.json
+++ b/.github/release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.1.4"
+  ".": "2.1.5"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a71af3..ae66644 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [2.1.5](https://github.com/intility/json-api-toolkit/compare/v2.1.4...v2.1.5) (2026-05-19)
+
+
+### Build System
+
+* **nuget:** Bump the testing group with 1 update ([#156](https://github.com/intility/json-api-toolkit/issues/156)) ([965f261](https://github.com/intility/json-api-toolkit/commit/965f2619435761bc7662abeab02475bed2feeea7))
+
+
+### CI
+
+* **actions:** Bump actions/create-github-app-token from 3.1.1 to 3.2.0 ([#153](https://github.com/intility/json-api-toolkit/issues/153)) ([b341e81](https://github.com/intility/json-api-toolkit/commit/b341e81b0a999de943925683ede573f788e8a981))
+* **actions:** Bump github/codeql-action from 4.35.4 to 4.35.5 ([#154](https://github.com/intility/json-api-toolkit/issues/154)) ([b5c1479](https://github.com/intility/json-api-toolkit/commit/b5c147906a085c876c72b1af053be0bd59f9eb9d))
+
 ## [2.1.4](https://github.com/intility/json-api-toolkit/compare/v2.1.3...v2.1.4) (2026-05-11)
 
 
diff --git a/JsonApiToolkit/JsonApiToolkit.csproj b/JsonApiToolkit/JsonApiToolkit.csproj
index b3798d7..63e50e8 100644
--- a/JsonApiToolkit/JsonApiToolkit.csproj
+++ b/JsonApiToolkit/JsonApiToolkit.csproj
@@ -7,7 +7,7 @@
     <!-- Package metadata -->
     <PackageId>Intility.JsonApiToolkit</PackageId>
     <Title>JsonApiToolkit</Title>
-    <Version>2.1.4</Version>
+    <Version>2.1.5</Version>
     <Authors>Intility</Authors>
     <Company>Intility</Company>
     <Copyright>Copyright (c) Intility</Copyright>
diff --git a/mkdocs.yaml b/mkdocs.yaml
index 82352f1..5377425 100644
--- a/mkdocs.yaml
+++ b/mkdocs.yaml
@@ -2,7 +2,7 @@ site_name: Intility JsonApiToolkit
 site_description: Documentation for Intility JsonApiToolkit
 site_url: https://intility.github.io/json-api-toolkit/
 extra:
-  version: 2.1.4 # x-release-please-version
+  version: 2.1.5 # x-release-please-version
 
 theme:
   name: material