diff --git a/.github/workflows/autodocs.yml b/.github/workflows/autodocs.yml
index 7c5c6eca..c378e177 100644
--- a/.github/workflows/autodocs.yml
+++ b/.github/workflows/autodocs.yml
@@ -13,7 +13,10 @@ jobs:
 
     - name: Install Launcher
       id: install-launcher
-      run: cargo install --git https://github.com/${{ github.repository }} --branch ${{ github.head_ref }} text-generation-launcher
+      env:
+        REF: ${{ github.head_ref }}
+        REPO: ${{ github.repository }}
+      run: cargo install --git "https://github.com/$REPO" --branch "$REF" text-generation-launcher
 
     - name: Check launcher Docs are up-to-date
       run: |