diff --git a/config/config_source.go b/config/config_source.go
index a01874672..e2168f877 100644
--- a/config/config_source.go
+++ b/config/config_source.go
@@ -1,12 +1,9 @@
 package config
 
 import (
-	"reflect"
 	"sync"
 
 	"github.com/fsnotify/fsnotify"
-	"github.com/mitchellh/copystructure"
-	"github.com/spf13/viper"
 )
 
 // Config holds pomerium configuration options.
@@ -14,15 +11,13 @@ type Config struct {
 	Options *Options
 }
 
-// Clone creates a deep clone of the config.
+// Clone creates a clone of the config.
 func (cfg *Config) Clone() *Config {
-	return copystructure.Must(copystructure.Config{
-		Copiers: map[reflect.Type]copystructure.CopierFunc{
-			reflect.TypeOf((*viper.Viper)(nil)): func(i interface{}) (interface{}, error) {
-				return i, nil
-			},
-		},
-	}.Copy(cfg)).(*Config)
+	newOptions := new(Options)
+	*newOptions = *cfg.Options
+	return &Config{
+		Options: newOptions,
+	}
 }
 
 // A ChangeListener is called when configuration changes.
diff --git a/go.mod b/go.mod
index 05fafd243..365fc1637 100644
--- a/go.mod
+++ b/go.mod
@@ -28,7 +28,6 @@ require (
 	github.com/hashicorp/memberlist v0.2.2
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
 	github.com/lithammer/shortuuid/v3 v3.0.4
-	github.com/mitchellh/copystructure v1.0.0
 	github.com/mitchellh/hashstructure v1.0.0
 	github.com/natefinch/atomic v0.0.0-20200526193002-18c0533a5b09
 	github.com/nsf/jsondiff v0.0.0-20200515183724-f29ed568f4ce
diff --git a/go.sum b/go.sum
index 5ab55ad63..c7cfe8383 100644
--- a/go.sum
+++ b/go.sum
@@ -342,8 +342,6 @@ github.com/miekg/dns v1.1.26/go.mod h1:bPDLeHnStXmXAq1m/Ch/hvfNHr14JKNPMBo3VZKju
 github.com/miekg/dns v1.1.27 h1:aEH/kqUzUxGJ/UHcEKdJY+ugH6WEzsEBBSPa8zuy1aM=
 github.com/miekg/dns v1.1.27/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
-github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=
-github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-testing-interface v1.0.0/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
@@ -355,8 +353,6 @@ github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0Qu
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
-github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
-github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=