diff --git a/README.md b/README.md
index 3b0b08a..2a4c0ff 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ Place it anywhere convenient — this guide assumes it sits next to your
 #### 2. Create `Dockerfile.gitea`
 
 ```dockerfile
-FROM openproject/openproject:15
+FROM openproject/openproject:17
 
 USER root