diff --git a/.github/workflows/ldoc.yml b/.github/workflows/ldoc.yml
index 75343417f..ae6be9e3c 100644
--- a/.github/workflows/ldoc.yml
+++ b/.github/workflows/ldoc.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Setup Lua
         uses: leafo/gh-actions-lua@v10
         with:
-          luaVersion: 5.4
+          luaVersion: "5.4"
       - name: Setup Lua Rocks
         uses: leafo/gh-actions-luarocks@v4
       - name: Setup dependencies