diff --git a/Dockerfile.heroku b/Dockerfile.heroku
index 1d81375..4fe29b4 100644
--- a/Dockerfile.heroku
+++ b/Dockerfile.heroku
@@ -1,3 +1 @@
 FROM gitea/gitea:1.14.5-rootless
-
-EXPOSE 2222 $PORT
\ No newline at end of file
diff --git a/heroku.yml b/heroku.yml
index d66c6a5..ddd58e8 100644
--- a/heroku.yml
+++ b/heroku.yml
@@ -15,4 +15,4 @@ build:
     GITEA__database__NAME: gitea
     GITEA__database__USER: gitea
     GITEA__database__PASSWD: gitea
-    PORT: 3000
+    PORT: $PORT