diff --git a/.github/workflows/acceptance.yml b/.github/workflows/acceptance.yml
index 8b74e0b..2ad17d4 100644
--- a/.github/workflows/acceptance.yml
+++ b/.github/workflows/acceptance.yml
@@ -25,6 +25,11 @@ on:
         required: false
         type: string
         default: ''
+      app-ref:
+        description: 'Git ref (branch, tag, or SHA) to checkout for the app repository. Defaults to the repository default branch.'
+        required: false
+        type: string
+        default: ''
       server-folder:
         description: 'The folder under the Apache root in which to install owncloud core'
         required: false
@@ -70,6 +75,11 @@ on:
         required: false
         type: string
         default: 'master'
+      server-version:
+        description: 'ownCloud server version to install (passed as PLUGIN_VERSION to owncloudci/core docker image). Use daily-master-qa for the OC11 nightly, or e.g. 10.16.2-qa for an OC10 testing release.'
+        required: false
+        type: string
+        default: 'daily-master-qa'
       filter-tags:
         description: test tags to run (or not run)
         required: false
@@ -161,6 +171,7 @@ jobs:
         with:
           path: apps/${{ inputs.app-name }}
           repository: ${{ inputs.app-repository }}
+          ref: ${{ inputs.app-ref }}
 
       - name: Checkout additional app
         if: ${{ inputs.additional-app != '' }}
@@ -231,7 +242,7 @@ jobs:
       - name: Install owncloud/core
         env:
           SERVER_ROOT: ${{ steps.prepend.outputs.server-root }}
-          VERSION: 'daily-master-qa'
+          VERSION: ${{ inputs.server-version }}
           CORE_PATH: /var/www/html${{ steps.prepend.outputs.server-root }}
           DB_TYPE: 'mysql'
           DB_NAME: 'owncloud'
@@ -260,7 +271,7 @@ jobs:
         if: ${{ inputs.federated-folder != '' }}
         env:
           FEDERATED_ROOT: ${{ steps.prepend.outputs.federated-root }}
-          VERSION: 'daily-master-qa'
+          VERSION: ${{ inputs.server-version }}
           CORE_PATH: /var/www/html${{ steps.prepend.outputs.federated-root }}
           DB_TYPE: 'mysql'
           DB_NAME: federateddb
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8aff426..aa869ab 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -119,3 +119,22 @@ jobs:
       app-repository: owncloud/notifications
       do-api-tests: true
       use-email-server: true
+
+  acceptance-api-oc10:
+    name: API acceptance tests (OC10)
+    uses: ./.github/workflows/acceptance.yml
+    with:
+      app-name: impersonate
+      app-repository: owncloud/impersonate
+      app-ref: 'v0.6.1'
+      do-api-tests: true
+      server-version: '10.16.2-qa'
+
+  acceptance-api-explicit-default:
+    name: API acceptance tests (explicit default version)
+    uses: ./.github/workflows/acceptance.yml
+    with:
+      app-name: impersonate
+      app-repository: owncloud/impersonate
+      do-api-tests: true
+      server-version: 'daily-master-qa'