diff --git a/prune.go b/prune.go
index 13b7336..16bd4c3 100644
--- a/prune.go
+++ b/prune.go
@@ -53,6 +53,7 @@ var DefaultFiles = []string{
 	".babelrc",
 	".yo-rc.json",
 	"jest.config.js",
+	"karma.conf.js",
 	".appveyor.yml",
 	"tsconfig.json",
 }