diff --git a/scanner/change_detector.go b/scanner/change_detector.go
index 4a337f207..ee94c1481 100644
--- a/scanner/change_detector.go
+++ b/scanner/change_detector.go
@@ -43,6 +43,7 @@ func (s *ChangeDetector) Scan() (changed []string, deleted []string, err error)
 
 func (s *ChangeDetector) loadDir(dirPath string) (children []string, lastUpdated time.Time, err error) {
 	dir, err := os.Open(dirPath)
+	defer dir.Close()
 	if err != nil {
 		return
 	}