diff --git a/.github/workflows/lint-php.yml b/.github/workflows/lint-php.yml
index f9cb57258..91453a1a8 100644
--- a/.github/workflows/lint-php.yml
+++ b/.github/workflows/lint-php.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ "7.4", "8.0", "8.1", "8.2" ]
+        php-versions: [ "7.4", "8.0", "8.1", "8.2", "8.3" ]
 
     name: php-lint
 
diff --git a/.github/workflows/php-test.yml b/.github/workflows/php-test.yml
index 372697018..3f961dd05 100644
--- a/.github/workflows/php-test.yml
+++ b/.github/workflows/php-test.yml
@@ -13,6 +13,8 @@ jobs:
             nextcloud-versions: 'stable25'
           - php-versions: '8.1'
             nextcloud-versions: 'stable25'
+          - php-versions: '8.3'
+            nextcloud-versions: 'master'
     name: php${{ matrix.php-versions }} on ${{ matrix.nextcloud-versions }} unit tests
     env:
       CI: true
@@ -55,7 +57,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '8.0', '8.1', '8.2' ]
+        php-versions: [ '8.0', '8.1', '8.2', '8.3' ]
         nextcloud-versions: [ 'master']
         include:
           - php-versions: '7.4'
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 17148a1dd..08d4b8c90 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -34,7 +34,7 @@
 	<screenshot>https://raw.githubusercontent.com/nextcloud/calendar/main/screenshots/week_room_suggestion.png</screenshot>
 	<screenshot>https://raw.githubusercontent.com/nextcloud/calendar/main/screenshots/week_sidebar.png</screenshot>
 	<dependencies>
-		<php min-version="7.4" max-version="8.2" />
+		<php min-version="7.4" max-version="8.3" />
 		<nextcloud min-version="25" max-version="28" />
 	</dependencies>
 	<background-jobs>
diff --git a/composer.json b/composer.json
index d362797f4..c4b628f77 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     },
     "require": {
-        "php": ">=7.4 <=8.2",
+        "php": ">=7.4 <=8.3",
         "bamarni/composer-bin-plugin": "^1.8.2"
     },
     "scripts": {
diff --git a/composer.lock b/composer.lock
index bbecfb7e0..42e1955e1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "033087bf92c1ab2b4ec0fb3c4dd1ac7a",
+    "content-hash": "a73549eefe8ff3d11a7ca66a6dfb45d4",
     "packages": [
         {
             "name": "bamarni/composer-bin-plugin",
@@ -71,7 +71,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=7.4 <=8.2"
+        "php": ">=7.4 <=8.3"
     },
     "platform-dev": [],
     "platform-overrides": {