diff --git a/9.3/alpine/Dockerfile b/9.3/alpine/Dockerfile
index 9b57d24a5d..d307280f28 100644
--- a/9.3/alpine/Dockerfile
+++ b/9.3/alpine/Dockerfile
@@ -22,8 +22,8 @@ ENV LANG en_US.utf8
 RUN mkdir /docker-entrypoint-initdb.d
 
 ENV PG_MAJOR 9.3
-ENV PG_VERSION 9.3.19
-ENV PG_SHA256 fb9e872cd9e927ba331690d86bc63dcb5a596acb7a536fa0518a3c7d43ac2fb5
+ENV PG_VERSION 9.3.20
+ENV PG_SHA256 eb138ad67075b8acb4fae56e98ca7be5d85f3da0ba658fc48206834598a2e6ca
 
 ENV OSSP_UUID_VERSION 1.6.2
 ENV OSSP_UUID_SHA256 11a615225baa5f8bb686824423f50e4427acd3f70d394765bdff32801f0fd5b0