diff --git a/.github/workflows/coq.yml b/.github/workflows/coq.yml
index 32dc1eef..9381a35d 100644
--- a/.github/workflows/coq.yml
+++ b/.github/workflows/coq.yml
@@ -12,7 +12,7 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:
@@ -69,7 +69,7 @@ jobs:
       run: make -j2 all
 
   coq-check-all:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: build
     if: always()
     steps: