diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000000000000000000000000000000000000..bc5980d78f1b957c4e99ecc53e54a5779d76baba
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,6 @@
+[run]
+omit =
+    tests/*
+    setup.py
+    csst_common/ccds/*.py
+    csst_common/dfs.py