diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index baa67d8..d940f6b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,6 +4,8 @@ env:
   CARGO_TERM_COLOR: always
   RUST_BACKTRACE: 1
   RUST_LOG: info
+  # https://github.com/Prior99/libsamplerate-sys/issues/21:
+  CMAKE_POLICY_VERSION_MINIMUM: 3.5
 jobs:
 
   Linux:
@@ -217,12 +219,22 @@ jobs:
           cargo cinstall --verbose
 
   deken-package:
-    # The deken package seems to be missing on 22.04:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
+    container: registry.git.iem.at/pd/deken
     needs: [Linux, macOS, Windows-MSYS2]
     steps:
+      - name: Install Git
+        run: |
+          apt-get update
+          apt-get install --assume-yes --no-install-recommends git
       - name: Clone Git repository
         uses: actions/checkout@v4
+        with:
+          # check out all tags to get proper version in Deken package
+          fetch-depth: 0
+      - name: git clone fix
+        # https://github.com/actions/checkout/issues/1169:
+        run: git config --system --add safe.directory $GITHUB_WORKSPACE
       - name: Retrieve Linux external
         uses: actions/download-artifact@v4
         with:
@@ -241,12 +253,6 @@ jobs:
       - name: Copy help patch and source file
         run: |
           cp pure-data/asdf~* asdf
-      - name: Install deken
-        run: |
-          sudo apt-get install --no-install-recommends deken
-          # work-arounds from https://github.com/pure-data/deken/issues/247:
-          mkdir ~/.deken
-          python3 -m pip install hy==0.19
       - name: Run deken
         run: |
           deken package -v $(git describe --tags --always) --objects pure-data/objects.txt asdf