diff --git a/AGENTS.md b/AGENTS.md
index 996fed7..e8d99c0 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -27,7 +27,7 @@ The project uses Docker for a consistent development environment.
 docker/
 ├── docker-compose.yml
 └── php-cli/
-    ├── Dockerfile          (php:8.5.4-cli + xdebug + extensions)
+    ├── Dockerfile          (php:8.5.12-cli + xdebug + extensions)
     └── php.ini
 ```
 
@@ -35,7 +35,7 @@ docker/
 
 | Target | Image | Container Name |
 |--------|-------|----------------|
-| `php-cli-ebics-client-php` | `php-cli-ebics-client-php:8.5.4-cli` | `php-cli-ebics-client-php` |
+| `php-cli-ebics-client-php` | `php-cli-ebics-client-php:8.5.12-cli` | `php-cli-ebics-client-php` |
 
 Network mode: **host** (for easy access to local services).  
 Xdebug is pre-installed and enabled (port 9003).
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 2e9cfc1..1016344 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -3,7 +3,7 @@ services:
     container_name: php-cli-ebics-client-php
     build:
       context: php-cli
-    image: php-cli-ebics-client-php:8.5.4-cli
+    image: php-cli-ebics-client-php:8.5.12-cli
     volumes:
       - ~/.ssh:/home/root/.ssh
       - ../:/var/www/ebics-client-php
diff --git a/docker/php-cli/Dockerfile b/docker/php-cli/Dockerfile
index d273870..161f651 100644
--- a/docker/php-cli/Dockerfile
+++ b/docker/php-cli/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.5.4-cli
+FROM php:8.5.12-cli
 
 RUN apt-get update && apt-get install -y \
     libpq-dev \