diff --git a/.github/workflows/test_runner.yaml b/.github/workflows/test_runner.yaml
index 70f535c5..7a7ffc11 100644
--- a/.github/workflows/test_runner.yaml
+++ b/.github/workflows/test_runner.yaml
@@ -8,7 +8,7 @@ env:
 jobs:
   check:
     name: Check formatting
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - uses: actions/checkout@v4
@@ -28,7 +28,7 @@ jobs:
 
   test:
     name: Run test suite
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - uses: actions/checkout@v4
@@ -62,7 +62,7 @@ jobs:
 
   build:
     name: Test we can build PyPI package
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
     - uses: actions/checkout@v4