diff --git a/context.go b/context.go
index 0fa16b1..e593004 100644
--- a/context.go
+++ b/context.go
@@ -87,6 +87,8 @@ func (c *Context) InitContext() {
 		DoAccessToken:   os.Getenv("DO_ACCESS_TOKEN"),
 		AwsAccessKey:    os.Getenv("AWS_ACCESS_KEY"),
 		AwsSecretKey:    os.Getenv("AWS_SECRET_KEY"),
+		DNSimpleEmail:   os.Getenv("DNSIMPLE_EMAIL"),
+		DNSimpleKey:     os.Getenv("DNSIMPLE_KEY"),
 		AwsRegionName:   "us-east-1",
 	}
 
diff --git a/letsencrypt/providers.go b/letsencrypt/providers.go
index 143a256..55c8a20 100644
--- a/letsencrypt/providers.go
+++ b/letsencrypt/providers.go
@@ -22,6 +22,10 @@ type ProviderOpts struct {
 	AwsAccessKey  string
 	AwsSecretKey  string
 	AwsRegionName string
+
+	// DNSimple credentials
+	DNSimpleEmail string
+	DNSimpleKey   string
 }
 
 type DnsProvider string
@@ -30,12 +34,14 @@ const (
 	CLOUDFLARE   = DnsProvider("CloudFlare")
 	DIGITALOCEAN = DnsProvider("DigitalOcean")
 	ROUTE53      = DnsProvider("Route53")
+	DNSIMPLE     = DnsProvider("DNSimple")
 )
 
 var dnsProviderFactory = map[DnsProvider]interface{}{
 	CLOUDFLARE:   makeCloudflareProvider,
 	DIGITALOCEAN: makeDigitalOceanProvider,
 	ROUTE53:      makeRoute53Provider,
+	DNSIMPLE:     makeDNSimpleProvider,
 }
 
 func getProvider(opts ProviderOpts) (lego.ChallengeProvider, error) {
@@ -96,3 +102,19 @@ func makeRoute53Provider(opts ProviderOpts) (lego.ChallengeProvider, error) {
 	}
 	return provider, nil
 }
+
+// returns a preconfigured DNSimple lego.ChallengeProvider
+func makeDNSimpleProvider(opts ProviderOpts) (lego.ChallengeProvider, error) {
+	if len(opts.DNSimpleEmail) == 0 {
+		return nil, fmt.Errorf("DNSimple Email not set")
+	}
+	if len(opts.DNSimpleKey) == 0 {
+		return nil, fmt.Errorf("DNSimple API key is not set")
+	}
+
+	provider, err := lego.NewDNSProviderDNSimple(opts.DNSimpleEmail, opts.DNSimpleKey)
+	if err != nil {
+		return nil, err
+	}
+	return provider, nil
+}