diff --git a/go.mod b/go.mod
index 4df6a62..90650ea 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/dnaeon/go-vcr v1.0.1 // indirect
 	github.com/go-acme/lego/v3 v3.1.0
 	github.com/golang/protobuf v1.3.2
-	github.com/mholt/certmagic v0.8.3
+	github.com/mholt/certmagic v0.9.0
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/spf13/cobra v0.0.5
diff --git a/go.sum b/go.sum
index 5b6b6c9..5610594 100644
--- a/go.sum
+++ b/go.sum
@@ -214,6 +214,8 @@ github.com/mattn/go-tty v0.0.0-20180219170247-931426f7535a/go.mod h1:XPvLUNfbS4f
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mholt/certmagic v0.8.3 h1:JOUiX9IAZbbgyjNP2GY6v/6lorH+9GkZsc7ktMpGCSo=
 github.com/mholt/certmagic v0.8.3/go.mod h1:91uJzK5K8IWtYQqTi5R2tsxV1pCde+wdGfaRaOZi6aQ=
+github.com/mholt/certmagic v0.9.0 h1:dYh9sZPDBTcIiPhYM/Qtv3V623/zFH34FmpbrQTpMAc=
+github.com/mholt/certmagic v0.9.0/go.mod h1:91uJzK5K8IWtYQqTi5R2tsxV1pCde+wdGfaRaOZi6aQ=
 github.com/miekg/dns v1.1.15 h1:CSSIDtllwGLMoA6zjdKnaE6Tx6eVUxQ29LUgGetiDCI=
 github.com/miekg/dns v1.1.15/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=