diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5a1df67..5477cd5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,9 +8,9 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - '8.1'
           - '8.2'
           - '8.3'
+          - '8.4'
 
     steps:
       - name: Checkout
diff --git a/README.md b/README.md
index 0d2acc0..5718485 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,7 @@ $when = $expression->getNext();
 | 2.4.* | 7.4 - 8.2 | end of life |
 | 3.0.* | 7.4 - 8.2 | end of life |
 | 3.1.* | 8.1 - 8.3 |             |
+| 3.2.* | 8.2 - 8.4 |             |
 
 ## Changelog
 
@@ -106,3 +107,4 @@ $when = $expression->getNext();
 | 3.0.6 (2023-07-30) | fixed #18, #19 |
 | 3.0.7 (2023-10-28) | fixed #22 |
 | 3.1.0 (2023-11-23) | added PHP 8.3 support, dropped PHP 7/8.0 support, updated PHPUnit to 10.* |
+| 3.2.0 (TBD) | added PHP 8.4 support |
diff --git a/composer.json b/composer.json
index 0dca546..cd17d87 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     }
   ],
   "require": {
-    "php": "8.1.* || 8.2.* || 8.3.*"
+    "php": "8.2.* || 8.3.* || 8.4.*"
   },
   "require-dev": {
     "phpunit/phpunit": "~10.0"