diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 55a179e..c829331 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,16 +7,26 @@ on:
 jobs:
   test:
     name: "PHPUnit: MW ${{ matrix.mw }}, PHP ${{ matrix.php }}"
+    continue-on-error: ${{ matrix.experimental }}
 
     strategy:
       matrix:
         include:
           - mw: 'REL1_39'
             php: '8.1'
+            experimental: false
           - mw: 'REL1_41'
             php: '8.2'
+            experimental: false
+          - mw: 'REL1_42'
+            php: '8.3'
+            experimental: false
+          - mw: 'REL1_43'
+            php: '8.3'
+            experimental: false
           - mw: 'master'
-            php: '8.2'
+            php: '8.4'
+            experimental: true
 
     runs-on: ubuntu-latest
 
diff --git a/README.md b/README.md
index 826b513..02e661b 100644
--- a/README.md
+++ b/README.md
@@ -57,8 +57,8 @@ Lua module examples:
 
 Platform requirements:
 
-* [PHP] 8.1 or later (tested up to 8.2)
-* [MediaWiki] 1.39 or later (tested up to 1.42-dev)
+* [PHP] 8.1 or later (tested up to 8.3)
+* [MediaWiki] 1.39 or later (tested up to 1.43)
 * [Scribunto] and lua
 
 We also recommend installing the [CodeEditor extension]