diff --git a/go.mod b/go.mod
index 420488f0a5ac9ebd0ac273858648092ba144b473..2ebb68e25b4c41e1059e734bd658c9b939f8be32 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/mattes/migrate v0.0.0-20180508041624-4768a648fbd9
 	github.com/mattn/go-sqlite3 v0.0.0-20200618132256-aa77c03e2fcb
 	github.com/openzipkin/zipkin-go v0.1.3 // indirect
-	github.com/prometheus/client_golang v0.9.1
+	github.com/prometheus/client_golang v0.9.4
 	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 // indirect
 	github.com/prometheus/common v0.3.0 // indirect
 	github.com/prometheus/procfs v0.0.0-20190403104016-ea9eea638872 // indirect