diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 6ce443e..7b1ecc6 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -13,9 +13,9 @@ jobs:
     strategy:
       matrix:
         php:
-        - '8.0'
         - '8.1'
         - '8.2'
+        - '8.3'
     steps:
       - uses: shivammathur/setup-php@v2
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e28b7d..6951e29 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+#### v2.7.0 (2024-04)
+* Drop PHP 8.0, add PHP 8.3
+
 #### v2.6.1 (2024-04)
 * Stricter content length in ASNObject
 
diff --git a/composer.json b/composer.json
index 1766c76..30545af 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "keywords": [ "x690", "x.690", "x.509", "x509", "asn1", "asn.1", "ber", "der", "binary", "encoding", "decoding" ],
 
     "require": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0"
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.0",