diff --git a/9.4/alpine/Dockerfile b/9.4/alpine/Dockerfile
index ba778765f4..339a039da6 100644
--- a/9.4/alpine/Dockerfile
+++ b/9.4/alpine/Dockerfile
@@ -22,8 +22,8 @@ ENV LANG en_US.utf8
 RUN mkdir /docker-entrypoint-initdb.d
 
 ENV PG_MAJOR 9.4
-ENV PG_VERSION 9.4.17
-ENV PG_SHA256 7a320cd335052b840d209dc9688f09965763351c590e3cc7bf577591179fd7c6
+ENV PG_VERSION 9.4.18
+ENV PG_SHA256 428337f2b2f5e3ea21b8a44f88eb89c99a07a324559b99aebe777c9abdf4c4c0
 
 RUN set -ex \
 	\