diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 600b14b..f8087b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
       - name: luacheck
         uses: lunarmodules/luacheck@v1
@@ -14,11 +14,14 @@ jobs:
   tests:
     strategy:
       matrix:
-        lua-version: ["5.1.5", "5.2.4", "5.3.6", "5.4.4"]
+        lua-version: ["5.1.5", "5.2.4", "5.3.6", "5.4.8"]
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
+
+      - name: install readline
+        run: sudo apt-get install -y libreadline-dev
 
       - name: localua
         run: |
diff --git a/LICENSE.txt b/LICENSE.txt
index e552ff9..262f8fd 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 The following license does not apply to `datalog/datalog.lua`.
 
-Copyright (C) 2016-2022 by Pierre Chapuis
+Copyright (C) 2016 by Pierre Chapuis
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 3bb9185..21d0349 100644
--- a/README.md
+++ b/README.md
@@ -22,4 +22,4 @@ Tests depend on [cwtest](https://github.com/catwell/cwtest).
 
 - `datalog/datalog.lua` is Copyright (C) 2004 The MITRE Corporation and released under the GNU LGPL.
 
-- All other files are Copyright (c) 2016-2022 Pierre Chapuis and released under the MIT license, see LICENSE.txt.
+- All other files are Copyright (c) 2016 Pierre Chapuis and released under the MIT license, see LICENSE.txt.