diff --git a/checkly/resource_alert_channel.go b/checkly/resource_alert_channel.go
index 0264e6c..f0f56e2 100644
--- a/checkly/resource_alert_channel.go
+++ b/checkly/resource_alert_channel.go
@@ -113,7 +113,7 @@ func resourceAlertChannel() *schema.Resource {
 						},
 						AcFieldWebhookMethod: {
 							Type:     schema.TypeString,
-							Required: true,
+							Optional: true,
 						},
 						AcFieldWebhookHeaders: {
 							Type:     schema.TypeMap,
@@ -137,7 +137,7 @@ func resourceAlertChannel() *schema.Resource {
 						},
 						AcFieldWebhookURL: {
 							Type:     schema.TypeString,
-							Optional: true,
+							Required: true,
 						},
 						AcFieldWebhookSecret: {
 							Type:     schema.TypeString,
diff --git a/checkly/resource_alert_channel_test.go b/checkly/resource_alert_channel_test.go
index 7349113..01ed7bc 100644
--- a/checkly/resource_alert_channel_test.go
+++ b/checkly/resource_alert_channel_test.go
@@ -158,7 +158,7 @@ func TestAccFail(t *testing.T) {
 				webhook {
 				}
 			}`,
-			Error: `The argument "method" is required`,
+			Error: `The argument "url" is required`,
 		},
 		{
 			Config: `resource "checkly_alert_channel" "t1" {
diff --git a/docs/resources/alert-channel.md b/docs/resources/alert-channel.md
index 56975d9..dd24458 100644
--- a/docs/resources/alert-channel.md
+++ b/docs/resources/alert-channel.md
@@ -143,9 +143,9 @@ resource "checkly_check_group" "test-group1" {
 ### Argument Reference for Webhook Alert Channel
 * `webhook` (Optional)
     * `name` (Required) Webhook's channel name.
-    * `method` (Required).
+    * `url` (Required).
+    * `method` (Optional) Default is `POST`.
     * `headers` (Optional).
-    * `query_parameters` (Optional).
     * `template` (Optional).
-    * `url` (Required).
+    * `query_parameters` (Optional).
     * `webhook_secret` (Optional).
diff --git a/go.mod b/go.mod
index 631aefe..272b1e2 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.14
 require (
 	github.com/agext/levenshtein v1.2.3 // indirect
 	github.com/aws/aws-sdk-go v1.31.11 // indirect
-	github.com/checkly/checkly-go-sdk v1.3.0
+	github.com/checkly/checkly-go-sdk v1.3.1
 	github.com/fatih/color v1.9.0 // indirect
 	github.com/google/go-cmp v0.5.0
 	github.com/gruntwork-io/terratest v0.18.3
@@ -24,3 +24,4 @@ require (
 	github.com/zclconf/go-cty v1.4.2 // indirect
 	golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980 // indirect
 )
+
diff --git a/go.sum b/go.sum
index 43489ab..93fad1e 100644
--- a/go.sum
+++ b/go.sum
@@ -60,6 +60,8 @@ github.com/checkly/checkly-go-sdk v1.1.0 h1:a28JXarOuR6wQ8OO9I3p6puAnIvxjM+2XKsZ
 github.com/checkly/checkly-go-sdk v1.1.0/go.mod h1:wkAoXD2cVCNQEXi9lHZqy/zONIAZc5D9frih6Gas3Rs=
 github.com/checkly/checkly-go-sdk v1.3.0 h1:eDaohYTyrjkPEWRmf3vDmzYseRE5Vek2i2r5yBzup7w=
 github.com/checkly/checkly-go-sdk v1.3.0/go.mod h1:wkAoXD2cVCNQEXi9lHZqy/zONIAZc5D9frih6Gas3Rs=
+github.com/checkly/checkly-go-sdk v1.3.1 h1:0ltTCmo3qGqbh457XcA8vhuSOLdzQ3vOpznz00A7SlY=
+github.com/checkly/checkly-go-sdk v1.3.1/go.mod h1:wkAoXD2cVCNQEXi9lHZqy/zONIAZc5D9frih6Gas3Rs=
 github.com/cheggaaa/pb v1.0.27/go.mod h1:pQciLPpbU0oxA0h+VJYYLxO+XeDQb5pZijXscXHm81s=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=