diff --git a/pyproject.toml b/pyproject.toml
index 00d12f4b..6ded6e9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,7 +63,9 @@ relative_files = true
 branch = true
 
 [tool.coverage.paths]
-source = "uiucprescon/"
+source = [
+    "uiucprescon/"
+]
 
 [tool.coverage.report]
 exclude_lines = [