--- a/.docker/readyness.js
+++ b/.docker/readyness.js
@@ -24,7 +24,7 @@
       break;
     }
     catch(e) {
-      await sleep(30000);
+      await sleep(60000);
     }
   }
 }
--- a/.github/workflows/node_build_test.yml
+++ b/.github/workflows/node_build_test.yml
@@ -89,9 +89,8 @@
       - name: Run tests
         run: |
           yarn install
-          yarn add @polkadot/api @polkadot/util mocha mochawesome
-
-          node -v
+          yarn add @polkadot/api @polkadot/util@9.4.1 mochawesome
+          yarn --pure-lockfile
           echo "Ready to start tests"
           node .docker/readyness.js
           cd tests