diff --git a/15/Dockerfile b/15/Dockerfile
index 5931236..b7c7754 100644
--- a/15/Dockerfile
+++ b/15/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/cloudnative-pg/postgresql:15.3-4
+FROM ghcr.io/cloudnative-pg/postgresql:15.4-6
 
 USER root