diff --git a/compose/gettingstarted.md b/compose/gettingstarted.md
index f9ca077ce6..2664c71d04 100644
--- a/compose/gettingstarted.md
+++ b/compose/gettingstarted.md
@@ -90,6 +90,7 @@ following:
     COPY requirements.txt requirements.txt
     RUN pip install -r requirements.txt
     COPY . .
+    EXPOSE 5000
     CMD ["flask", "run"]
 
 This tells Docker to: