diff --git a/comfy/deploy_environment.py b/comfy/deploy_environment.py
index fb6ee6b47..ba50ee213 100644
--- a/comfy/deploy_environment.py
+++ b/comfy/deploy_environment.py
@@ -1,3 +1,4 @@
+import functools
 import logging
 import os
 
@@ -8,14 +9,9 @@ logger = logging.getLogger(__name__)
 _DEFAULT_DEPLOY_ENV = "local_git"
 _ENV_FILENAME = ".comfy_environment"
 
-_cached_value: str | None = None
-
 
+@functools.cache
 def get_deploy_environment() -> str:
-    global _cached_value
-    if _cached_value is not None:
-        return _cached_value
-
     env_file = os.path.join(folder_paths.base_path, _ENV_FILENAME)
     try:
         with open(env_file, encoding="utf-8") as f:
@@ -24,12 +20,10 @@ def get_deploy_environment() -> str:
             first_line = f.readline(128).strip()
             value = "".join(c for c in first_line if 32 <= ord(c) < 127)
             if value:
-                _cached_value = value
-                return _cached_value
+                return value
     except FileNotFoundError:
         pass
     except Exception as e:
         logger.error("Failed to read %s: %s", env_file, e)
 
-    _cached_value = _DEFAULT_DEPLOY_ENV
-    return _cached_value
+    return _DEFAULT_DEPLOY_ENV
diff --git a/tests-unit/deploy_environment_test.py b/tests-unit/deploy_environment_test.py
index 77f7ad35f..f2b42f350 100644
--- a/tests-unit/deploy_environment_test.py
+++ b/tests-unit/deploy_environment_test.py
@@ -4,18 +4,17 @@ import os
 
 import pytest
 
-from comfy import deploy_environment
 from comfy.deploy_environment import get_deploy_environment
 
 
 @pytest.fixture(autouse=True)
 def _reset_cache_and_base_path(tmp_path, monkeypatch):
-    """Reset the module cache and point folder_paths.base_path at a tmp dir for each test."""
-    monkeypatch.setattr(deploy_environment, "_cached_value", None)
+    """Reset the functools cache and point folder_paths.base_path at a tmp dir for each test."""
+    get_deploy_environment.cache_clear()
     import folder_paths
     monkeypatch.setattr(folder_paths, "base_path", str(tmp_path))
     yield
-    monkeypatch.setattr(deploy_environment, "_cached_value", None)
+    get_deploy_environment.cache_clear()
 
 
 def _write_env_file(tmp_path, content: str) -> str: