diff --git a/.github/workflows/spec.yml b/.github/workflows/spec.yml
index 5c7a58a..bad39c5 100644
--- a/.github/workflows/spec.yml
+++ b/.github/workflows/spec.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        lua-version: ["5.4", "5.3", "5.2", "5.1", "luajit"]
+        lua-version: ["5.5.0", "5.4", "5.3", "5.2", "5.1", "luajit"]
 
     runs-on: ubuntu-latest