diff --git a/Dockerfile b/Dockerfile
index ba78fff..75fc2d7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 ARG DEBIAN_VERSION=bullseye
 ARG NODE_MAJOR=16
 
-FROM php:8.1-fpm-${DEBIAN_VERSION}
+FROM php:8.3-fpm-${DEBIAN_VERSION}
 
 ARG NODE_MAJOR
 ARG DEBIAN_VERSION
diff --git a/README.md b/README.md
index 8ba51c5..3c42138 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 ## Shopsys PHP Image
 
 Shopsys PHP Image is an optimized docker image for running Shopsys Platform in production and development environments.
-It is based on `php:8.1-fpm-bullseye` image and contains all necessary extensions and tools for running Shopsys Platform.
+It is based on `php:8.3-fpm-bullseye` image and contains all necessary extensions and tools for running Shopsys Platform.
 
 This repository is maintained by [shopsys/shopsys] monorepo, information about changes is in [monorepo CHANGELOG.md](https://github.com/shopsys/shopsys/blob/master/CHANGELOG.md).