diff --git a/.env.example b/.env.example
index a87b2f3..74d3e8e 100644
--- a/.env.example
+++ b/.env.example
@@ -344,3 +344,6 @@ FIREFLY_III_LAYOUT=v1
 # If you're stuck I understand you get desperate but look SOMEWHERE ELSE.
 #
 APP_URL=http://localhost
+
+# Port to run the application on
+FIREFLY_III_PORT=80
diff --git a/docker-compose.yml b/docker-compose.yml
index ed8237f..f96b779 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
     networks:
       - firefly_iii
     ports:
-      - 80:8080
+      - ${FIREFLY_III_PORT}:8080
     depends_on:
       - db
   db: