diff --git a/pyproject.toml b/pyproject.toml
index cb9f9cc..2f89a92 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -135,7 +135,7 @@ addopts = [
     ]
 
 [tool.coverage.run]
-source = ["src/ngio"]
+source = ["ngio"]
 omit = [
     "src/ngio/core/handler_protocol.py", # This is file only contains a protocol definition
     "src/ngio/ngff_meta/_meta_handler_protocol.py", # This is file only contains a protocol definition