diff --git a/.github/workflows/auto-rebase.yml b/.github/workflows/auto-rebase.yml
index 956ebfb9..11422e4e 100644
--- a/.github/workflows/auto-rebase.yml
+++ b/.github/workflows/auto-rebase.yml
@@ -6,7 +6,7 @@ jobs:
   rebase:
     name: Rebase
     if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase')
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
     - name: Automatic Rebase
diff --git a/.github/workflows/exercise-tests.yml b/.github/workflows/exercise-tests.yml
index 30485e41..18533da3 100644
--- a/.github/workflows/exercise-tests.yml
+++ b/.github/workflows/exercise-tests.yml
@@ -23,7 +23,7 @@ jobs:
       fail-fast: false
       matrix:
         julia-version: ["1.6", "1", nightly]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        os: [ubuntu-22.04, windows-2022, macOS-latest]
 
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
@@ -42,7 +42,7 @@ jobs:
 
   test-runner:
     name: Julia Test Runner
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9