diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
index 4a27bb8..aaa92c4 100644
--- a/.github/workflows/ant.yml
+++ b/.github/workflows/ant.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-java@v2
@@ -19,7 +19,7 @@ jobs:
     # corresponds to conf/github/Dockerfile
     - run: |
         sudo apt-get update
-        sudo apt-get install ghostscript
+        sudo apt-get install imagemagick ghostscript
     - run: grep -v '^.*policy.*coder.*none.*PDF.*$' < /etc/ImageMagick-6/policy.xml > policy.xml-new
     - run: sudo cp policy.xml-new /etc/ImageMagick-6/policy.xml
     # corresponds to Jenkinsfile parallelBranches["Github"]