diff --git a/.github/workflows/merge-build.yml b/.github/workflows/merge-build.yml
index da0b729..84168a5 100644
--- a/.github/workflows/merge-build.yml
+++ b/.github/workflows/merge-build.yml
@@ -25,7 +25,7 @@ jobs:
   publish-snapshot:
     name: publish to oss sonatype & push image
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     permissions: 
       contents: read
@@ -44,6 +44,11 @@ jobs:
         architecture: x64
         java-version: 11
 
+    - name: Set up Maven
+      uses: stCarolas/setup-maven@v4.5
+      with:
+        maven-version: 3.8.8
+
     - name: maven-settings-xml-action
       uses: whelk-io/maven-settings-xml-action@v14
       if: ${{ github.event.repository.fork == false }}
diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 73eaf9b..bbc3277 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -24,7 +24,7 @@ on: [pull_request]
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
     - uses: actions/checkout@v2
@@ -35,6 +35,11 @@ jobs:
         java-version: '11'
         distribution: 'adopt'
 
+    - name: Set up Maven
+      uses: stCarolas/setup-maven@v4.5
+      with:
+        maven-version: 3.8.8
+
     - name: maven-settings-xml-action
       uses: whelk-io/maven-settings-xml-action@v14
       with: