diff --git a/serve/serve.go b/serve/serve.go
index 5a3d5ea..34b46b4 100644
--- a/serve/serve.go
+++ b/serve/serve.go
@@ -169,6 +169,8 @@ func (h *Handler) tryServeFile(rw http.ResponseWriter, req *http.Request, site,
 	open, err := h.storageFs.Open(servePath)
 	switch {
 	case err == nil:
+		defer open.Close()
+
 		// ignore directories
 		stat, err := open.Stat()
 		if err != nil || stat.IsDir() {