diff --git a/pyproject.toml b/pyproject.toml
index edf3fafe4e..a7ae282b4b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -302,7 +302,7 @@ curl = ">=8.4.0"
 [tool.coverage.run]
 # See note above on need to specify separate sources for pytest-coverage and coverage.
 #source = ["src/pudl/", "test/integration/", "test/unit/"]
-include = ["src/pudl/**"]
+include = ["src/pudl/**", "test/integration/**", "test/unit/**"]
 omit = [
     # Never hit by integration tests:
     "src/pudl/validate.py",