diff --git a/pkg/cache/ondisk.go b/pkg/cache/ondisk.go
index 9186879..31b69ec 100644
--- a/pkg/cache/ondisk.go
+++ b/pkg/cache/ondisk.go
@@ -36,6 +36,7 @@ func (c *onDisk) Get(resourceKind, resourceAPIVersion, k8sVersion string) (inter
 	if err != nil {
 		return nil, err
 	}
+	defer f.Close()
 
 	return io.ReadAll(f)
 }