diff --git a/postgres-backup-s3/install.sh b/postgres-backup-s3/install.sh
index 6297ed6..9c27afc 100644
--- a/postgres-backup-s3/install.sh
+++ b/postgres-backup-s3/install.sh
@@ -7,7 +7,7 @@ set -e
 apk update
 
 # install pg_dump
-apk add postgres
+apk add postgresql
 
 # install s3 tools
 apk add python py-pip