diff --git a/.github/workflows/docker-release.yml b/.github/workflows/docker-release.yml
index 2cfbdb0..8a4738b 100644
--- a/.github/workflows/docker-release.yml
+++ b/.github/workflows/docker-release.yml
@@ -17,6 +17,7 @@ on:
     paths:
       - 'Dockerfile'
       - 'Dockerfile.alpine'
+      - 'OPENCLAW_VERSION'
       - '.github/workflows/docker-release.yml'
   workflow_dispatch:
 
diff --git a/OPENCLAW_VERSION b/OPENCLAW_VERSION
index f370ef5..854a3b9 100644
--- a/OPENCLAW_VERSION
+++ b/OPENCLAW_VERSION
@@ -1 +1 @@
-2026.4.21
+2026.4.22
diff --git a/README.md b/README.md
index e4c117b..13f2be5 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Alpine tags are currently published for:
 
 [![Build & Push to Docker Hub](https://github.com/Molten-Bot/openclaw/actions/workflows/docker-release.yml/badge.svg)](https://github.com/Molten-Bot/openclaw/actions/workflows/docker-release.yml)
 
-Pull requests that change Dockerfiles or this workflow run the Docker build matrix as validation; `OPENCLAW_VERSION`-only changes build on `main` push. Only `main` pushes and `v*` tags publish images to Docker Hub.
+Pull requests that change Dockerfiles, `OPENCLAW_VERSION`, or this workflow run the Docker build matrix as validation. Only `main` pushes and `v*` tags publish images to Docker Hub.
 
 ## Usage