diff --git a/Dockerfile b/Dockerfile
index 0f29aa9..44dae3e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG P2POOL_BRANCH=v4.15
+ARG P2POOL_BRANCH=v4.15.1
 
 # Select latest Ubuntu LTS for the build image base
 FROM ubuntu:latest as build