diff --git a/.github/workflows/amalgamate-ubuntu20.yml b/.github/workflows/amalgamate-ubuntu24.yml
similarity index 84%
rename from .github/workflows/amalgamate-ubuntu20.yml
rename to .github/workflows/amalgamate-ubuntu24.yml
index af73869..f92b093 100644
--- a/.github/workflows/amalgamate-ubuntu20.yml
+++ b/.github/workflows/amalgamate-ubuntu24.yml
@@ -1,10 +1,10 @@
-name: Amalgamate Ubuntu 20.04 CI (GCC 9)
+name: Amalgamate Ubuntu 20.04 CI (GCC 13æ)
 
 on: [push, pull_request]
 
 jobs:
   ubuntu-build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - name: Compile with amalgamation