diff --git a/.github/workflows/behat-sqlite.yml b/.github/workflows/behat-sqlite.yml
index fe76835b..74a95e87 100644
--- a/.github/workflows/behat-sqlite.yml
+++ b/.github/workflows/behat-sqlite.yml
@@ -66,7 +66,7 @@ jobs:
           persist-credentials: false
           submodules: true
           repository: nextcloud/server
-          ref: master
+          ref: stable33
 
       - name: Checkout app
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -101,10 +101,10 @@ jobs:
             --admin-user admin \
             --admin-pass admin
           ./occ app:enable --force ${{ env.APP_NAME }}
-          git clone --depth 1 https://github.com/nextcloud/notifications apps/notifications
+          git clone --depth 1 --branch stable33 https://github.com/nextcloud/notifications apps/notifications
           composer --working-dir=apps/notifications install --no-dev
           ./occ app:enable --force notifications
-          git clone --depth 1 https://github.com/nextcloud/spreed apps/spreed
+          git clone --depth 1 --branch stable33 https://github.com/nextcloud/spreed apps/spreed
           composer --working-dir=apps/spreed install --no-dev
           ./occ app:enable --force spreed
           ./occ config:system:set auth.bruteforce.protection.enabled --value false --type boolean
diff --git a/.github/workflows/playwright.yml b/.github/workflows/playwright.yml
index 4912adf0..945b01ac 100644
--- a/.github/workflows/playwright.yml
+++ b/.github/workflows/playwright.yml
@@ -66,7 +66,7 @@ jobs:
           persist-credentials: false
           submodules: true
           repository: nextcloud/server
-          ref: master
+          ref: stable33
 
       - name: Checkout app
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2