diff --git a/Dockerfile b/Dockerfile
index 2addd6f..3d6c0f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # -------------- Build-time variables --------------
 ARG NEXTCLOUD_VERSION=24.0.1
-ARG PHP_VERSION=8.0
+ARG PHP_VERSION=8.1
 ARG NGINX_VERSION=1.20
 
 ARG ALPINE_VERSION=3.15