diff --git a/.github/workflows/mobile-eas-preview.yml b/.github/workflows/mobile-eas-preview.yml
index 5db69c9befaf..0af16fbf5a42 100644
--- a/.github/workflows/mobile-eas-preview.yml
+++ b/.github/workflows/mobile-eas-preview.yml
@@ -66,7 +66,10 @@ jobs:
         if: steps.expo-token.outputs.present == 'true'
         uses: expo/expo-github-action@v8
         with:
-          eas-version: latest
+          # eas-cli 22 renamed `project` to `app` in build JSON, and
+          # continuous-deploy-fingerprint still reads `build.project.ownerAccount`.
+          # Unpin once https://github.com/expo/expo-github-action/issues/358 is fixed.
+          eas-version: 21.8.0
           token: ${{ secrets.EXPO_TOKEN }}
           # npm, not pnpm: this only installs eas-cli into the action's own
           # tool dir, and pnpm 11 hard-fails that install on dtrace-provider's