diff --git a/reflex/config.py b/reflex/config.py
index eb7e0d459..f9fdb253a 100644
--- a/reflex/config.py
+++ b/reflex/config.py
@@ -545,10 +545,10 @@ class EnvironmentVariables:
     REFLEX_FRONTEND_ONLY: EnvVar[bool] = env_var(False)
 
     # The port to run the frontend on.
-    REFLEX_FRONTEND_PORT: EnvVar[int] = env_var(None)
+    REFLEX_FRONTEND_PORT: EnvVar[int | None] = env_var(None)
 
     # The port to run the backend on.
-    REFLEX_BACKEND_PORT: EnvVar[int] = env_var(None)
+    REFLEX_BACKEND_PORT: EnvVar[int | None] = env_var(None)
 
     # Reflex internal env to reload the config.
     RELOAD_CONFIG: EnvVar[bool] = env_var(False, internal=True)