diff --git a/.coveragerc b/.coveragerc
index 12dcad9e088871bf3cf907821c2efacbc506770d..877951435423d4bc4ab9e87dcedb1665e73c8c8a 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -7,3 +7,4 @@ omit =
     csst_common/dfs.py
     csst_common/pipeline.py
     csst_common/decorator.py
+    csst_common/file.py