diff --git a/.github/workflows/test-cosmos.yml b/.github/workflows/test-cosmos.yml
index af51f6b2..c66877eb 100644
--- a/.github/workflows/test-cosmos.yml
+++ b/.github/workflows/test-cosmos.yml
@@ -6,13 +6,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ["18.x"]
+        node-version: ["20.x"]
     steps:
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
 
+      - name: Fix docker issue
+        run: update-alternatives --set iptables /usr/sbin/iptables-legacy
+
       - name: Checkout code
         uses: actions/checkout@v4