diff --git a/Changes.md b/Changes.md
index 3f924f1..db5bccf 100644
--- a/Changes.md
+++ b/Changes.md
@@ -8,6 +8,5 @@
 - Swap default Docker environment from production to development, to improve DX.
 - Eliminate production-mode inclusion of devDependencies, to keep production Docker image as light as possible and lower production-mode memory usage.
 - Explicitly volume-map all files into Docker container when in dev-mode.
-- Restore mongodb port mapping, for test suite (temporary - this should be removed once the test suite properly uses an in-memory mock db).
 - Removed the --harmony-proxies flag from npm test, as it is no longer supported by nodejs.
 - Eliminate different markup warning between client/server during dev
diff --git a/docker-compose-production.yml b/docker-compose-production.yml
index 19857a1..1164641 100644
--- a/docker-compose-production.yml
+++ b/docker-compose-production.yml
@@ -14,8 +14,6 @@ services:
       MONGO_URL: mongodb://db:27017/mern-starter
   db:
     image: mongo:latest
-    ports:
-      - "27017:27017"
     volumes:
       - dbdata:/data/db
 volumes:
diff --git a/docker-compose.yml b/docker-compose.yml
index 20d6da1..b581c9c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,8 +29,6 @@ services:
     tty: true
   db:
     image: mongo:latest
-    ports:
-      - "27017:27017"
     volumes:
       - dbdata:/data/db
 volumes: