diff --git a/.github/workflows/code_checks.yml b/.github/workflows/code_checks.yml
index aea3dfa..8106c77 100644
--- a/.github/workflows/code_checks.yml
+++ b/.github/workflows/code_checks.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: ['8.0', '8.1', '8.2']
+        php: ['8.1', '8.2', '8.3']
 
     name: PHP ${{ matrix.php }} tests
     env:
diff --git a/composer.json b/composer.json
index 60f32f1..4c330ea 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
     "description": "Library to send e-mails over different transports and protocols (like SMTP and IMAP) using immutable messages and streams. Also includes SMTP server.",
     "license": "MIT",
     "require": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
         "ext-intl": "*",
         "ext-iconv": "*"
     },