diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc7aa320226de..b8eccc4661721 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 - [plugin] added `Task#runOptions` field and `RunOptions` interface [#11759](https://github.com/eclipse-theia/theia/pull/11759) - Contributed on behalf of STMicroelectronics
 - [tasks] added support for `reevaluateOnRerun` run option [#11759](https://github.com/eclipse-theia/theia/pull/11759) - Contributed on behalf of STMicroelectronics
+- [plugin] updated the default VS Code API version from `1.53.2` to `1.55.2` [#11823](https://github.com/eclipse-theia/theia/pull/11823)
 
 <a name="breaking_changes_1.32.0">[Breaking Changes:](#breaking_changes_1.32.0)</a>
 
diff --git a/dev-packages/application-package/src/api.ts b/dev-packages/application-package/src/api.ts
index af7e787045fef..3d6d5f339490a 100644
--- a/dev-packages/application-package/src/api.ts
+++ b/dev-packages/application-package/src/api.ts
@@ -18,4 +18,4 @@
  * The default supported API version the framework supports.
  * The version should be in the format `x.y.z`.
  */
-export const DEFAULT_SUPPORTED_API_VERSION = '1.53.2';
+export const DEFAULT_SUPPORTED_API_VERSION = '1.55.2';