diff --git a/9.4/alpine/Dockerfile b/9.4/alpine/Dockerfile
index ca66a98d5e..5352cf95d2 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 9.4.22
-ENV PG_SHA256 d6aa4c2b9204e375545b9845b0e5957b34affff1783863a80a194f2b2833c66b
+ENV PG_VERSION 9.4.23
+ENV PG_SHA256 0d009c08b0c82b12484950bba10ae8bfd6f0c7bafd8f086ab756c483dd231d9b
 
 RUN set -ex \
 	\