diff --git a/.coveragerc b/.coveragerc
index 68ae769a077e5b29c566f540c7db65cb7a5330a0..28619b289e40ff44fa8c4e01d4b05c65ff2012c0 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,6 +2,7 @@
 omit =
     tests/*.py
     setup.py
+    csst_common/utils/*.py
     csst_common/ccds/*.py
     csst_common/dfs.py
     csst_common/pipeline.py