diff --git a/docker-compose.yml b/docker-compose.yml
index c3cf9f0..f5b3557 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -87,10 +87,10 @@ services:
           - CHROME_DRIVER_VERSION=${WORKSPACE_CHROME_DRIVER_VERSION}
           - NODE_VERSION=${WORKSPACE_NODE_VERSION}
           - YARN_VERSION=${WORKSPACE_YARN_VERSION}
+          - DRUSH_VERSION=${WORKSPACE_DRUSH_VERSION}
           - TZ=${WORKSPACE_TIMEZONE}
           - BLACKFIRE_CLIENT_ID=${BLACKFIRE_CLIENT_ID}
           - BLACKFIRE_CLIENT_TOKEN=${BLACKFIRE_CLIENT_TOKEN}
-          - DRUSH_VERSION=${DRUSH_VERSION}
       volumes:
         - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}
       extra_hosts:
diff --git a/env-example b/env-example
index f17b541..cfa5c47 100644
--- a/env-example
+++ b/env-example
@@ -70,7 +70,6 @@ DOCKER_SYNC_STRATEGY=native_osx
 
 ### WORKSPACE #############################################
 
-
 WORKSPACE_COMPOSER_GLOBAL_INSTALL=true
 WORKSPACE_COMPOSER_REPO_PACKAGIST=
 WORKSPACE_INSTALL_NODE=true
@@ -89,6 +88,7 @@ WORKSPACE_INSTALL_MONGO=false
 WORKSPACE_INSTALL_AMQP=false
 WORKSPACE_INSTALL_MSSQL=false
 WORKSPACE_INSTALL_DRUSH=false
+WORKSPACE_DRUSH_VERSION=8.1.16
 WORKSPACE_INSTALL_DRUPAL_CONSOLE=false
 WORKSPACE_INSTALL_AEROSPIKE=false
 WORKSPACE_INSTALL_V8JS=false
@@ -349,7 +349,3 @@ LARAVEL_ECHO_SERVER_PORT=6001
 SOLR_VERSION=5.5
 SOLR_PORT=8983
 SOLR_DATAIMPORTHANDLER_MYSQL=false
-
-### DRUSH_VERSION #########################################
-
-DRUSH_VERSION=9.2.3
diff --git a/workspace/Dockerfile b/workspace/Dockerfile
index f95d554..b02488c 100644
--- a/workspace/Dockerfile
+++ b/workspace/Dockerfile
@@ -319,10 +319,14 @@ RUN if [ ${INSTALL_SWOOLE} = true ]; then \
 # Drush:
 ###########################################################################
 
+# Deprecated install of Drush 8 and earlier versions.
+# Drush 9 and up require Drush to be listed as a composer dependency of your site.
+
 USER root
 
 ARG INSTALL_DRUSH=false
-ARG DRUSH_VERSION=${DRUSH_VERSION}
+ARG DRUSH_VERSION
+ENV DRUSH_VERSION ${DRUSH_VERSION}
 
 RUN if [ ${INSTALL_DRUSH} = true ]; then \
     apt-get update -yqq && \