diff --git a/README.md b/README.md
index 75e87c4..28b6479 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # dokku mongo [![Build Status](https://img.shields.io/travis/dokku/dokku-mongo.svg?branch=master "Build Status")](https://travis-ci.org/dokku/dokku-mongo) [![IRC Network](https://img.shields.io/badge/irc-freenode-blue.svg "IRC Freenode")](https://webchat.freenode.net/?channels=dokku)
 
-Official mongo plugin for dokku. Currently defaults to installing [mongo 3.4.20](https://hub.docker.com/_/mongo/).
+Official mongo plugin for dokku. Currently defaults to installing [mongo 3.6.13](https://hub.docker.com/_/mongo/).
 
 ## requirements
 
diff --git a/config b/config
index 1233c78..ee54a1e 100644
--- a/config
+++ b/config
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 export MONGO_IMAGE=${MONGO_IMAGE:="mongo"}
-export MONGO_IMAGE_VERSION=${MONGO_IMAGE_VERSION:="3.4.20"}
+export MONGO_IMAGE_VERSION=${MONGO_IMAGE_VERSION:="3.6.13"}
 export MONGO_ROOT=${MONGO_ROOT:="$DOKKU_LIB_ROOT/services/mongo"}
 export MONGO_HOST_ROOT=${MONGO_HOST_ROOT:=$MONGO_ROOT}
 
diff --git a/tests/service_list.bats b/tests/service_list.bats
index 900fbd4..eaae47e 100755
--- a/tests/service_list.bats
+++ b/tests/service_list.bats
@@ -11,20 +11,20 @@ teardown() {
 
 @test "($PLUGIN_COMMAND_PREFIX:list) with no exposed ports, no linked apps" {
   run dokku "$PLUGIN_COMMAND_PREFIX:list"
-  assert_contains "${lines[*]}" "l     mongo:3.4.20  running  -              -"
+  assert_contains "${lines[*]}" "l     mongo:3.6.13  running  -              -"
 }
 
 @test "($PLUGIN_COMMAND_PREFIX:list) with exposed ports" {
   dokku "$PLUGIN_COMMAND_PREFIX:expose" l 4242 4243 4244 4245
   run dokku "$PLUGIN_COMMAND_PREFIX:list"
-  assert_contains "${lines[*]}" "l     mongo:3.4.20  running  27017->4242 27018->4243 27019->4244 28017->4245   -"
+  assert_contains "${lines[*]}" "l     mongo:3.6.13  running  27017->4242 27018->4243 27019->4244 28017->4245   -"
 }
 
 @test "($PLUGIN_COMMAND_PREFIX:list) with linked app" {
   dokku apps:create my_app
   dokku "$PLUGIN_COMMAND_PREFIX:link" l my_app
   run dokku "$PLUGIN_COMMAND_PREFIX:list"
-  assert_contains "${lines[*]}" "l     mongo:3.4.20  running  -              my_app"
+  assert_contains "${lines[*]}" "l     mongo:3.6.13  running  -              my_app"
   dokku --force apps:destroy my_app
 }