diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index f7775ff..cb07c35 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -27,6 +27,6 @@ jobs:
         node-version: ${{ matrix.node-version }}
     - run: npm install yarn
     - run: |
-        XTERMJS=5.0.0 ./bootstrap.sh
+        XTERMJS=5.0.0 IMAGEADDON=${{ github.head_ref || github.ref_name }} ./bootstrap.sh
     - run: cd xterm-addon-image/xterm.js && yarn test
     - run: cd xterm-addon-image/xterm.js && yarn test-api-chromium --headless
diff --git a/bootstrap.sh b/bootstrap.sh
index bdadf13..d82384b 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -10,7 +10,7 @@ rm -rf .git
 
 # clone addon
 cd addons
-git clone https://github.com/jerch/xterm-addon-image
+git clone --branch $IMAGEADDON https://github.com/jerch/xterm-addon-image
 cd ..
 
 # overwrite files in base repo to have full test integration