diff --git a/support/docker/dev/Dockerfile b/support/docker/dev/Dockerfile
index 991cf05e2..e41f5e1e2 100644
--- a/support/docker/dev/Dockerfile
+++ b/support/docker/dev/Dockerfile
@@ -39,8 +39,8 @@ RUN yarn install --pure-lockfile \
 # Expose PeerTube sources as a volume
 VOLUME /home/user/PeerTube
 
-# Expose API and frontend
-EXPOSE 3000 9000
+# Expose frontend, API and RTMP
+EXPOSE 3000 9000 1935
 
 # Start PostgreSQL and Redis
 CMD ["service postgresql start && redis-server"]
diff --git a/support/docker/janitor/Dockerfile b/support/docker/janitor/Dockerfile
index 2b4f2b215..5e7970d17 100644
--- a/support/docker/janitor/Dockerfile
+++ b/support/docker/janitor/Dockerfile
@@ -29,4 +29,5 @@ RUN sudo service postgresql start \
 COPY --chown=user:user supervisord.conf /tmp/supervisord-extra.conf
 RUN cat /tmp/supervisord-extra.conf | sudo tee -a /etc/supervisord.conf
 
-EXPOSE 3000 9000
+# Expose frontend, API and RTMP
+EXPOSE 3000 9000 1935
diff --git a/support/docker/production/Dockerfile.buster b/support/docker/production/Dockerfile.buster
index 5af8aa29a..457936090 100644
--- a/support/docker/production/Dockerfile.buster
+++ b/support/docker/production/Dockerfile.buster
@@ -41,6 +41,8 @@ VOLUME /config
 COPY ./support/docker/production/entrypoint.sh /usr/local/bin/entrypoint.sh
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
 
+# Expose API and RTMP
+EXPOSE 9000 1935
+
 # Run the application
 CMD ["npm", "start"]
-EXPOSE 9000