diff --git a/.github/workflows/snowflake-docker.yml b/.github/workflows/snowflake-docker.yml
index ab13989..50190dc 100644
--- a/.github/workflows/snowflake-docker.yml
+++ b/.github/workflows/snowflake-docker.yml
@@ -28,11 +28,7 @@ jobs:
       run: |
         docker build --build-arg PGVER=${{ matrix.pgver }} -t snowflake .
 
-    - name: Run Docker Container
-      run: |
-        docker run -d --name snowflake -e POSTGRES_HOST_AUTH_METHOD=trust -p 5432:5432 snowflake
-        sleep 5
-
+    
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
@@ -46,7 +42,13 @@ jobs:
             python3-dev \
             python3-psycopg2 \
             python3-dotenv
+        until "pg_isready -p 59${{ matrix.pgver }}" 2>/dev/null; do >&2 echo "Postgres is unavailable - sleeping for 2 seconds"
+            sleep 2
 
+- name: Run Docker Container
+      run: |
+        docker run -d --name snowflake -e POSTGRES_HOST_AUTH_METHOD=trust -p 5432:5432 snowflake
+      
     - name: Run Test Harness (runner.py)
       run: |
         python test/runner.py -c test/t/lib/${{ matrix.pgver }}config.env -s test/schedule_files/script_file -k