diff --git a/.github/workflows/BuildImages.yml b/.github/workflows/BuildImages.yml
index ee29103f7..ee31fbb80 100644
--- a/.github/workflows/BuildImages.yml
+++ b/.github/workflows/BuildImages.yml
@@ -67,6 +67,7 @@ jobs:
         uses: mainsail-crew/MainsailOS-actions/build-image@master
         with:
           config: ${{ matrix.config }}
+          custompios-ref: 1.5.0
 
       - name: Rename image file
         id: move-image
diff --git a/.github/workflows/Release.yml b/.github/workflows/Release.yml
index d1ac59a5d..c39617e99 100644
--- a/.github/workflows/Release.yml
+++ b/.github/workflows/Release.yml
@@ -207,6 +207,7 @@ jobs:
         with:
           config: ${{ matrix.config }}
           build-ref: v2.1.x
+          custompios-ref: 1.5.0
 
       - name: Upload failed Logfile
         if: failure()