diff --git a/.github/workflows/spec.yml b/.github/workflows/spec.yml
index 29490b3..7bac743 100644
--- a/.github/workflows/spec.yml
+++ b/.github/workflows/spec.yml
@@ -11,22 +11,23 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        lua-version: ["5.4", "5.3", "5.2", "5.1", "luajit"]
+        lua-version: ["5.5", "5.4", "5.3", "5.2", "5.1", "luajit"]
         strict: ["std.strict", ""]
 
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
 
-      - uses: leafo/gh-actions-lua@v8.0.0
+      - uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: ${{ matrix.lua-version }}
 
-      - uses: leafo/gh-actions-luarocks@v4.0.0
+      - uses: leafo/gh-actions-luarocks@v6
 
       - name: install
         run: |
+          sudo apt-get update -q -q --yes
           sudo apt-get install -y libyaml-dev
           luarocks install ansicolors
           luarocks install ldoc
diff --git a/optparse-git-1.rockspec b/optparse-git-1.rockspec
index b8e6a16..a3ce201 100644
--- a/optparse-git-1.rockspec
+++ b/optparse-git-1.rockspec
@@ -19,7 +19,7 @@ source = {
 }
 
 dependencies = {
-   'lua >= 5.1, < 5.5',
+   'lua >= 5.1, < 5.6',
 }
 
 build = {