diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e41b059a0..128bdaf0d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -54,7 +54,7 @@ jobs:
         run: release/signing-cleanup.sh
 
   test:
-    runs-on: macOS-latest
+    runs-on: macos-11.0
     needs: build
     timeout-minutes: 70
 
diff --git a/.github/workflows/device-tests.yml b/.github/workflows/device-tests.yml
index a07524317..66c834f6c 100644
--- a/.github/workflows/device-tests.yml
+++ b/.github/workflows/device-tests.yml
@@ -12,7 +12,7 @@ on:
 
 jobs:
   android-test:
-    runs-on: macOS-latest
+    runs-on: macos-11.0
     timeout-minutes: 60
 
     strategy: