diff --git a/go.mod b/go.mod
index cbfde4a..7ed5829 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/pkgems/npm-cache-proxy
 
-go 1.20
+go 1.13
 
 require (
 	github.com/gin-contrib/zap v0.0.0-20190405225521-7c4b822813e7