diff --git a/.github/workflows/deploy-theme.yml b/.github/workflows/deploy-theme.yml
index 97a9e2c..b2792c1 100644
--- a/.github/workflows/deploy-theme.yml
+++ b/.github/workflows/deploy-theme.yml
@@ -8,7 +8,8 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@master
-      - uses: TryGhost/action-deploy-theme@v1.0.0
+      - uses: TryGhost/action-deploy-theme@v1.2.0
         with:
           api-url: ${{ secrets.GHOST_ADMIN_API_URL }}
           api-key: ${{ secrets.GHOST_ADMIN_API_KEY }}
+          theme-name: "casper-master"