diff --git a/.github/workflows/spec.yml b/.github/workflows/spec.yml
index 66cd185..8163711 100644
--- a/.github/workflows/spec.yml
+++ b/.github/workflows/spec.yml
@@ -27,7 +27,7 @@ jobs:
 
     - name: Install Lua and LuaRocks
       run: |
-        python -m hererocks env -l5.1 -rlatest
+        python -m hererocks env --lua 5.1 -rlatest
 
     - name: install busted
       run: |