diff --git a/koni.conf b/koni.conf
index 43bd900..c453d84 100644
--- a/koni.conf
+++ b/koni.conf
@@ -13,8 +13,8 @@
 
 [letsencrypt]
 # URL of Let's Encrypt service to use. By default, koni uses the staging URL.
-#url = "https://acme-v01.api.letsencrypt.org/directory"
-#url = "https://acme-staging.api.letsencrypt.org/directory"
+#url = "https://acme-v02.api.letsencrypt.org/directory"
+#url = "https://acme-staging-v02.api.letsencrypt.org/directory"
 
 # Email to use in Let's Encrypt requests
 email = "koni@example.com"
diff --git a/main.go b/main.go
index e5bfe74..92183c5 100644
--- a/main.go
+++ b/main.go
@@ -22,7 +22,7 @@ const (
 	defaultDebug       = false
 	defaultListenHTTP  = "127.0.0.1:4080"
 	defaultListenHTTPS = "127.0.0.1:4443"
-	defaultURL         = "https://acme-staging.api.letsencrypt.org/directory"
+	defaultURL         = "https://acme-staging-v02.api.letsencrypt.org/directory"
 	defaultCertsDir    = "."
 )