diff --git a/go.mod b/go.mod
index 82eda3ab..575e670f 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,8 @@ go 1.14
 require (
 	github.com/Masterminds/sprig/v3 v3.0.2
 	github.com/alecthomas/chroma v0.7.2-0.20200305040604-4f3623dce67a
-	github.com/caddyserver/certmagic v0.10.7
+	github.com/caddyserver/certmagic v0.10.8
+	github.com/cenkalti/backoff/v4 v4.0.2 // indirect
 	github.com/dustin/go-humanize v1.0.1-0.20200219035652-afde56e7acac
 	github.com/go-acme/lego/v3 v3.5.0
 	github.com/google/cel-go v0.4.1
@@ -26,6 +27,7 @@ require (
 	go.uber.org/zap v1.14.1
 	golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59
 	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e
+	golang.org/x/sys v0.0.0-20200331124033-c3d80250170d // indirect
 	google.golang.org/genproto v0.0.0-20200323114720-3f67cca34472
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/square/go-jose.v2 v2.4.1 // indirect
diff --git a/go.sum b/go.sum
index 606edcaa..d89c30aa 100644
--- a/go.sum
+++ b/go.sum
@@ -120,10 +120,12 @@ github.com/bombsimon/wsl/v2 v2.0.0/go.mod h1:mf25kr/SqFEPhhcxW1+7pxzGlW+hIl/hYTK
 github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
-github.com/caddyserver/certmagic v0.10.7 h1:OwT4Delj91ee7vumu+CnFJdWLsYBYj6kJ2PwsoqI7LA=
-github.com/caddyserver/certmagic v0.10.7/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
+github.com/caddyserver/certmagic v0.10.8 h1:dF4e+u4niZB9ismvOOJ65Tm15TWFAqPwhP3Rn3gh7Vs=
+github.com/caddyserver/certmagic v0.10.8/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
 github.com/cenkalti/backoff/v4 v4.0.0 h1:6VeaLF9aI+MAUQ95106HwWzYZgJJpZ4stumjj6RFYAU=
 github.com/cenkalti/backoff/v4 v4.0.0/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
+github.com/cenkalti/backoff/v4 v4.0.2 h1:JIufpQLbh4DkbQoii76ItQIUFzevQSqOLZca4eamEDs=
+github.com/cenkalti/backoff/v4 v4.0.2/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
 github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
@@ -960,6 +962,8 @@ golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0
 golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200331124033-c3d80250170d h1:nc5K6ox/4lTFbMVSL9WRR81ixkcwXThoiF6yf+R9scA=
+golang.org/x/sys v0.0.0-20200331124033-c3d80250170d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.0.0-20170915090833-1cbadb444a80/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=