diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 24a8cff..a279a54 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -169,7 +169,7 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version: 20
-    - run: npm install mdpdf -g
+    - run: npm install -g git+https://github.com/elliotblackburn/mdpdf.git#3.0.4
     - name: Cache
       uses: actions/cache@v4
       with: