diff --git a/pun-sort/sort_api.py b/pun-sort/sort_api.py
index 739634d..281269d 100755
--- a/pun-sort/sort_api.py
+++ b/pun-sort/sort_api.py
@@ -282,4 +282,5 @@ def sort_words(request: SortRequest):
 
 if __name__ == "__main__":
     import uvicorn
-    uvicorn.run(app, host="0.0.0.0", port=8000)
+    import os
+    uvicorn.run(app, host="0.0.0.0", port=int(os.getenv("PORT", 8000)))