diff --git a/.gitignore b/.gitignore
index 162a9f53..4f884b1f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ pr.env
 junit*.xml
 debug.test
 /output/
+coverage.out
diff --git a/Makefile b/Makefile
index 7661ca5d..84caddc7 100644
--- a/Makefile
+++ b/Makefile
@@ -278,3 +278,4 @@ clean:
 	rm -rf test/bin/
 	rm -f node-problem-detector-*.tar.gz*
 	rm -rf output/
+	rm -f coverage.out