diff --git a/Dockerfile b/Dockerfile
index 8e5c889..a37d1d0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG PHP_VERSION=8.4
+ARG PHP_VERSION=8.5
 
 ###########
 # Backend #
diff --git a/composer.json b/composer.json
index e982bc6..40f400e 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "minimum-stability": "stable",
     "prefer-stable": true,
     "require": {
-        "php": "8.4.*",
+        "php": "8.5.*",
         "ext-ctype": "*",
         "ext-iconv": "*",
         "ext-redis": "*",
diff --git a/composer.lock b/composer.lock
index 3637995..f232216 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": "d9babdc88b052193eecabd1f6411f6a1",
+    "content-hash": "d74b4c89edf49b32c32d3a22f1275298",
     "packages": [
         {
             "name": "michelf/php-markdown",
@@ -7511,7 +7511,7 @@
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
-        "php": "8.4.*",
+        "php": "8.5.*",
         "ext-ctype": "*",
         "ext-iconv": "*",
         "ext-redis": "*",