diff --git a/go.mod b/go.mod
index e96914377..92b66c061 100644
--- a/go.mod
+++ b/go.mod
@@ -19,7 +19,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/oklog/run v1.1.0
 	github.com/patrickmn/go-cache v2.1.0+incompatible
-	github.com/peterbourgon/ff/v3 v3.0.0
+	github.com/peterbourgon/ff/v3 v3.1.2
 	github.com/rs/cors v1.7.0
 	github.com/stretchr/testify v1.7.0
 	github.com/tailscale/depaware v0.0.0-20201214215404-77d1e9757027
diff --git a/go.sum b/go.sum
index 058a3f17d..3b1b6aac3 100644
--- a/go.sum
+++ b/go.sum
@@ -436,8 +436,8 @@ github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/9
 github.com/pelletier/go-toml v1.4.0/go.mod h1:PN7xzY2wHTK0K9p34ErDQMlFxa51Fk0OUruD3k1mMwo=
 github.com/pelletier/go-toml v1.6.0/go.mod h1:5N711Q9dKgbdkxHL+MEfF31hpT7l0S0s/t2kKREewys=
 github.com/performancecopilot/speed v3.0.0+incompatible/go.mod h1:/CLtqpZ5gBg1M9iaPbIdPPGyKcA8hKdoy6hAWba7Yac=
-github.com/peterbourgon/ff/v3 v3.0.0 h1:eQzEmNahuOjQXfuegsKQTSTDbf4dNvr/eNLrmJhiH7M=
-github.com/peterbourgon/ff/v3 v3.0.0/go.mod h1:UILIFjRH5a/ar8TjXYLTkIvSvekZqPm5Eb/qbGk6CT0=
+github.com/peterbourgon/ff/v3 v3.1.2 h1:0GNhbRhO9yHA4CC27ymskOsuRpmX0YQxwxM9UPiP6JM=
+github.com/peterbourgon/ff/v3 v3.1.2/go.mod h1:XNJLY8EIl6MjMVjBS4F0+G0LYoAqs0DTa4rmHHukKDE=
 github.com/peterh/liner v0.0.0-20170317030525-88609521dc4b/go.mod h1:xIteQHvHuaLYG9IFj6mSxM0fCKrs34IrEQUhOYuGPHc=
 github.com/pierrec/lz4 v1.0.2-0.20190131084431-473cd7ce01a1/go.mod h1:3/3N9NVKO0jef7pBehbT1qWhCMrIgbYNnFAZCqQ5LRc=
 github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=