diff --git a/.github/workflows/chartpress.yaml b/.github/workflows/chartpress.yaml
index 46857c4d..ae54e6e1 100644
--- a/.github/workflows/chartpress.yaml
+++ b/.github/workflows/chartpress.yaml
@@ -22,7 +22,7 @@ jobs:
 
     - name: Install Chartpress
       run: |
-        pip install -v chartpress && pip install six && pip install ruamel.yaml
+        pip install chartpress six ruamel.yaml==0.18.4
     - name: Run Chartpress
       run: chartpress --push
       env: