diff --git a/stdlib/2and3/logging/__init__.pyi b/stdlib/2and3/logging/__init__.pyi
index e44e36fd2..a38edcc7e 100644
--- a/stdlib/2and3/logging/__init__.pyi
+++ b/stdlib/2and3/logging/__init__.pyi
@@ -29,6 +29,7 @@ raiseExceptions: bool
 logThreads: bool
 logMultiprocessing: bool
 logProcesses: bool
+_srcfile: Optional[str]
 
 def currentframe() -> FrameType: ...