diff --git a/.github/workflows/acceptance-tests.yml b/.github/workflows/acceptance-tests.yml
index 6273050..790a80f 100644
--- a/.github/workflows/acceptance-tests.yml
+++ b/.github/workflows/acceptance-tests.yml
@@ -27,9 +27,9 @@ jobs:
           - wp: 'nightly'
             php: '8.1'
           - wp: '6.4'
-            php: '8.2'
+            php: '8.3'
           - wp: 'nightly'
-            php: '8.2'
+            php: '8.3'
       fail-fast: false
     name: WP ${{ matrix.wp }} / PHP ${{ matrix.php }}
     runs-on: ubuntu-latest
diff --git a/readme.md b/readme.md
index 937cb4d..dd7cd2c 100644
--- a/readme.md
+++ b/readme.md
@@ -45,7 +45,7 @@ WP Crontrol aims to be fully accessible to all of its users. [WP Crontrol's full
 
 ### Does this plugin work with PHP 8?
 
-Yes, it's actively tested and working up to PHP 8.2.
+Yes, it's actively tested and working up to PHP 8.3.
 
 ### I get the error "There was a problem spawning a call to the WP-Cron system on your site". How do I fix this?