diff --git a/README.md b/README.md
index 13a8b52..37ffe47 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@
 
 # SimpleSAMLphp
 
-This image is pre-configured with Apache 2.4, php 8.2 and SSP.
+This image is pre-configured with Apache 2.4, php 8.3 and SSP.
 The behavior of the image can be controlled with 
  * environmental variables
  * mounting custom configuration and certificates
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2de8750..dbc238d 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.2-apache
+FROM php:8.3-apache
 
 # Simplify installing php extensions. See
 COPY --from=mlocati/php-extension-installer /usr/bin/install-php-extensions /usr/bin/