diff --git a/doc/docker/fpm/build.sh b/doc/docker/fpm/build.sh
index 51d2b7595a..7382e2669f 100755
--- a/doc/docker/fpm/build.sh
+++ b/doc/docker/fpm/build.sh
@@ -3,7 +3,7 @@
 
 cd $(dirname $0)
 
-DEFAULT_PHP_VERSION=8.2
+DEFAULT_PHP_VERSION=8.3
 PHP_VERSION=$DEFAULT_PHP_VERSION
 BASE=ubuntu:20.04
 # which architectures to build for multi-platform images, if buildx is available on a Docker desktop or newer Docker installation
@@ -57,4 +57,4 @@ else
       }
     done
   }
-fi
\ No newline at end of file
+fi