diff --git a/main.tf b/main.tf
index a5a5225..e66101d 100644
--- a/main.tf
+++ b/main.tf
@@ -53,6 +53,10 @@ resource "null_resource" "fail2ban_exporter" {
       "go build -v",
       "echo '# install fail2ban_exporter'",
       "install -Dm775 fail2ban-prometheus-exporter /usr/sbin/fail2ban_exporter",
+      "echo '# clean go cache'",
+      "go env GOCACHE",
+      "go clean -modcache",
+      #
       #
       "echo '# enable service fail2ban_exporter'",
       "install -Dm775 /tmp/fail2ban_exporter.initd /etc/init.d/fail2ban_exporter",