diff --git a/.github/workflows/all-ci.yml b/.github/workflows/all-ci.yml
index b1288b729..c5daec628 100644
--- a/.github/workflows/all-ci.yml
+++ b/.github/workflows/all-ci.yml
@@ -12,8 +12,12 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Install 64tass
-        run: sudo apt-get update -y && sudo apt-get install -y 64tass
+      - name: add debian testing repository and install 64tass
+        uses: myci-actions/add-deb-repo@11
+        with:
+          repo: ftp://ftp.debian.org/debian/ testing main
+          repo-name: debian testing
+          install: 64tass
 
       - name: Set up JDK 11
         uses: actions/setup-java@v2