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-rw-r--r--django/utils/autoreload.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/django/utils/autoreload.py b/django/utils/autoreload.py
index cc9cc1304a..6de15a2916 100644
--- a/django/utils/autoreload.py
+++ b/django/utils/autoreload.py
@@ -57,7 +57,7 @@ _error_files = []
def code_changed():
global _mtimes, _win
filenames = []
- for m in sys.modules.values():
+ for m in list(sys.modules.values()):
try:
filenames.append(m.__file__)
except AttributeError: