diff --git a/postgres-backup-s3/Dockerfile b/postgres-backup-s3/Dockerfile
index 4351c4d..8c1e591 100644
--- a/postgres-backup-s3/Dockerfile
+++ b/postgres-backup-s3/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.2
+FROM alpine:3.4
 MAINTAINER Johannes Schickling "schickling.j@gmail.com"
 
 ADD install.sh install.sh
diff --git a/postgres-restore-s3/Dockerfile b/postgres-restore-s3/Dockerfile
index ca0e2ca..97940d6 100644
--- a/postgres-restore-s3/Dockerfile
+++ b/postgres-restore-s3/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.2
+FROM alpine:3.4
 MAINTAINER Johannes Schickling "schickling.j@gmail.com"
 
 ADD install.sh install.sh