diff --git a/.travis.yml b/.travis.yml
index e263f95..812a515 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,8 +2,8 @@ dist: trusty
 language: bash
 env:
   - DOKKU_VERSION=master
-  - DOKKU_VERSION=v0.14.0
-  - DOKKU_VERSION=v0.12.0
+  - DOKKU_VERSION=v0.17.0
 install: make setup
+before_script: sudo sysctl -w vm.max_map_count=262144
 script: make test
 after_failure: make report
diff --git a/README.md b/README.md
index d5f2cef..3616fd1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # dokku redis [![Build Status](https://img.shields.io/travis/dokku/dokku-redis.svg?branch=master "Build Status")](https://travis-ci.org/dokku/dokku-redis) [![IRC Network](https://img.shields.io/badge/irc-freenode-blue.svg "IRC Freenode")](https://webchat.freenode.net/?channels=dokku)
 
-Official redis plugin for dokku. Currently defaults to installing [redis 5.0.4](https://hub.docker.com/_/redis/).
+Official redis plugin for dokku. Currently defaults to installing [redis 5.0.5](https://hub.docker.com/_/redis/).
 
 ## requirements
 
diff --git a/common-functions b/common-functions
index d770be5..f9ccfe4 100755
--- a/common-functions
+++ b/common-functions
@@ -217,7 +217,7 @@ service_backup() {
   fi
 
   # shellcheck disable=SC2086
-  docker run --rm $BACKUP_PARAMETERS dokku/s3backup:0.9.4
+  docker run --rm $BACKUP_PARAMETERS dokku/s3backup:0.10.0
 }
 
 service_backup_auth() {
@@ -586,6 +586,26 @@ service_parse_args() {
   shift "$((OPTIND - 1))" # remove options from positional parameters
 }
 
+service_password() {
+  declare desc="Fetch the password for a service"
+  declare SERVICE="$1"
+  local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
+  local PASSWORD_FILE="$SERVICE_ROOT/PASSWORD"
+  if [[ -f "$PASSWORD_FILE" ]]; then
+    cat "$PASSWORD_FILE"
+  fi
+}
+
+service_root_password() {
+  declare desc="Fetch the root password for a service"
+  declare SERVICE="$1"
+  local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
+  local PASSWORD_FILE="$SERVICE_ROOT/ROOTPASSWORD"
+  if [[ -f "$PASSWORD_FILE" ]]; then
+    cat "$PASSWORD_FILE"
+  fi
+}
+
 service_port_expose() {
   declare desc="Wrapper for exposing service ports"
   declare SERVICE="$1"
@@ -657,7 +677,7 @@ service_port_unpause() {
   echo "${PORTS[@]}" >"$PORT_FILE"
 
   # shellcheck disable=SC2046
-  docker run -d --link "$SERVICE_NAME:$PLUGIN_COMMAND_PREFIX" --name "$EXPOSED_NAME" $(docker_ports_options "${PORTS[@]}") --restart always --label dokku=ambassador --label "dokku.ambassador=$PLUGIN_COMMAND_PREFIX" dokku/ambassador:0.2.0 >/dev/null
+  docker run -d --link "$SERVICE_NAME:$PLUGIN_COMMAND_PREFIX" --name "$EXPOSED_NAME" $(docker_ports_options "${PORTS[@]}") --restart always --label dokku=ambassador --label "dokku.ambassador=$PLUGIN_COMMAND_PREFIX" dokku/ambassador:0.3.0 >/dev/null
   if [[ "$LOG_FAIL" == "true" ]]; then
     dokku_log_info1 "Service $SERVICE exposed on port(s) [container->host]: $(service_exposed_ports "$SERVICE")"
   fi
diff --git a/config b/config
index d6cbf85..303153e 100755
--- a/config
+++ b/config
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 export REDIS_IMAGE=${REDIS_IMAGE:="redis"}
-export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="5.0.4"}
+export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="5.0.5"}
 export REDIS_ROOT=${REDIS_ROOT:="$DOKKU_LIB_ROOT/services/redis"}
 export REDIS_HOST_ROOT=${REDIS_HOST_ROOT:=$REDIS_ROOT}
 
diff --git a/functions b/functions
index 7f8c7f9..2e9bc1a 100755
--- a/functions
+++ b/functions
@@ -80,7 +80,7 @@ service_create_container() {
   echo "$ID" >"$SERVICE_ROOT/ID"
 
   dokku_log_verbose_quiet "Waiting for container to be ready"
-  docker run --rm --link "$SERVICE_NAME:$PLUGIN_COMMAND_PREFIX" dokku/wait:0.3.0 -p "$PLUGIN_DATASTORE_WAIT_PORT" >/dev/null
+  docker run --rm --link "$SERVICE_NAME:$PLUGIN_COMMAND_PREFIX" dokku/wait:0.4.0 -p "$PLUGIN_DATASTORE_WAIT_PORT" >/dev/null
 
   dokku_log_info2 "$PLUGIN_SERVICE container created: $SERVICE"
   service_info "$SERVICE"
@@ -142,13 +142,6 @@ service_start() {
   fi
 }
 
-service_password() {
-  local SERVICE="$1"
-  local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-  local PASSWORD="$(cat "$SERVICE_ROOT/PASSWORD")"
-  echo "$PASSWORD"
-}
-
 service_url() {
   local SERVICE="$1"
   local PASSWORD="$(service_password "$SERVICE")"
diff --git a/install b/install
index ba5ca99..8b347f9 100755
--- a/install
+++ b/install
@@ -17,10 +17,10 @@ plugin-install() {
   }
 
   pull-docker-image "${PLUGIN_IMAGE}:${PLUGIN_IMAGE_VERSION}"
-  pull-docker-image "dokku/ambassador:0.2.0"
-  pull-docker-image "dokku/wait:0.3.0"
-  pull-docker-image "dokku/s3backup:0.9.4"
-  pull-docker-image "busybox:1.30.1-uclibc"
+  pull-docker-image "busybox:1.31.0-uclibc"
+  pull-docker-image "dokku/ambassador:0.3.0"
+  pull-docker-image "dokku/s3backup:0.10.0"
+  pull-docker-image "dokku/wait:0.4.0"
 
   mkdir -p "$PLUGIN_DATA_ROOT" || echo "Failed to create $PLUGIN_SERVICE data directory"
   chown dokku:dokku "$PLUGIN_DATA_ROOT"
diff --git a/subcommands/destroy b/subcommands/destroy
index 57afc65..5b5d776 100755
--- a/subcommands/destroy
+++ b/subcommands/destroy
@@ -45,7 +45,7 @@ service-destroy-cmd() {
   service_container_rm "$SERVICE"
 
   dokku_log_verbose_quiet "Removing data"
-  docker run --rm -v "$SERVICE_HOST_ROOT/data:/data" -v "$SERVICE_HOST_ROOT/config:/config" busybox:1.30.1-uclibc chmod 777 -R /config /data
+  docker run --rm -v "$SERVICE_HOST_ROOT/data:/data" -v "$SERVICE_HOST_ROOT/config:/config" busybox:1.31.0-uclibc chmod 777 -R /config /data
   rm -rf "$SERVICE_ROOT"
 
   dokku_log_info2 "$PLUGIN_SERVICE container deleted: $SERVICE"
diff --git a/tests/service_list.bats b/tests/service_list.bats
index c85c2e0..7afd66b 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 "${lines[*]}" "l     redis:5.0.4  running  -              -"
+  assert_contains "${lines[*]}" "l     redis:5.0.5  running  -              -"
 }
 
 @test "($PLUGIN_COMMAND_PREFIX:list) with exposed ports" {
   dokku "$PLUGIN_COMMAND_PREFIX:expose" l 4242
   run dokku "$PLUGIN_COMMAND_PREFIX:list"
-  assert_contains "${lines[*]}" "l     redis:5.0.4  running  6379->4242     -"
+  assert_contains "${lines[*]}" "l     redis:5.0.5  running  6379->4242     -"
 }
 
 @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     redis:5.0.4  running  -              my_app"
+  assert_contains "${lines[*]}" "l     redis:5.0.5  running  -              my_app"
   dokku --force apps:destroy my_app
 }