diff --git a/go.mod b/go.mod
index 8548ffe..224ed6f 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/go-kit/kit v0.9.0
 	github.com/gorilla/mux v1.8.0
 	github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d
-	github.com/itzg/go-flagsfiller v1.4.2
+	github.com/itzg/go-flagsfiller v1.8.0
 	github.com/juju/ratelimit v1.0.1
 	github.com/pires/go-proxyproto v0.6.1
 	github.com/pkg/errors v0.9.1
diff --git a/go.sum b/go.sum
index 0006731..5f3f6fe 100644
--- a/go.sum
+++ b/go.sum
@@ -80,8 +80,8 @@ github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
 github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d h1:/WZQPMZNsjZ7IlCpsLGdQBINg5bxKQ1K1sh6awxLtkA=
 github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d/go.mod h1:qj24IKcXYK6Iy9ceXlo3Tc+vtHo9lIhSX5JddghvEPo=
-github.com/itzg/go-flagsfiller v1.4.2 h1:aQRyQ9/ps111FZYGhzxgKYiOewE7zbAks7rxF49Qlm8=
-github.com/itzg/go-flagsfiller v1.4.2/go.mod h1:mfQgTahSs4OHn8PYev2Wwi1LJXUiYiGuZVCpBLxzbYs=
+github.com/itzg/go-flagsfiller v1.8.0 h1:e6K0N4lzYQc6y9QoCMzVwpg+YHKrMVW3mqiE9bwkQ9U=
+github.com/itzg/go-flagsfiller v1.8.0/go.mod h1:mfQgTahSs4OHn8PYev2Wwi1LJXUiYiGuZVCpBLxzbYs=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.8 h1:QiWkFLKq0T7mpzwOTu6BzNDbfTE8OLrYhVKYMLF46Ok=
 github.com/json-iterator/go v1.1.8/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=