diff --git a/go/endpoint_test.go b/go/endpoint_test.go
index 294dc3c0a..4081df851 100644
--- a/go/endpoint_test.go
+++ b/go/endpoint_test.go
@@ -7,7 +7,7 @@ import (
 	"testing"
 )
 
-func TestEndpoint_Serialization(t *testing.T) {
+func TestEndpointIn_Serialization(t *testing.T) {
 	testCases := []struct {
 		name            string
 		testEndpoint    *svix.EndpointIn
@@ -74,3 +74,43 @@ func TestEndpoint_Serialization(t *testing.T) {
 		}
 	}
 }
+
+func TestEndpointPatch_Serialization(t *testing.T) {
+	testCases := []struct {
+		name            string
+		testEndpoint    *svix.EndpointPatch
+		wantChannels    bool
+		wantFilterTypes bool
+	}{
+		{
+			name: "explicitly setting channels to null",
+			testEndpoint: &svix.EndpointPatch{
+				Channels: nil,
+			},
+			wantChannels:    true,
+			wantFilterTypes: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		b, _ := json.Marshal(tc.testEndpoint)
+		s := string(b)
+
+		gotChannels := strings.Contains(s, "channels")
+		gotFilterTypes := strings.Contains(s, "filterTypes")
+
+		if tc.wantChannels && !gotChannels {
+			t.Errorf("case `%s`: expected EndpointPatch to have a channels field", tc.name)
+		}
+		if !tc.wantChannels && gotChannels {
+			t.Errorf("case `%s`: expected EndpointPatch to NOT have a channels field", tc.name)
+		}
+
+		if tc.wantFilterTypes && !gotFilterTypes {
+			t.Errorf("case `%s`: expected EndpointPatch to have a filterTypes field", tc.name)
+		}
+		if !tc.wantFilterTypes && gotFilterTypes {
+			t.Errorf("case `%s`: expected EndpointPatch to NOT have a filterTypes field", tc.name)
+		}
+	}
+}
diff --git a/go/svix_test.go b/go/svix_test.go
index 8bef5415e..3c0c34f4e 100644
--- a/go/svix_test.go
+++ b/go/svix_test.go
@@ -74,12 +74,19 @@ func TestKitchenSink(t *testing.T) {
 	}
 
 	endp, err := client.Endpoint.Create(ctx, app.Id, &svix.EndpointIn{
-		Url: "https://example.svix.com/",
+		Url:      "https://example.svix.com/",
+		Channels: []string{"ch0", "ch1"},
 	})
 	if err != nil {
 		t.Fatal(err)
 	}
 
+	if len(endp.GetChannels()) != 2 {
+		t.Errorf("got %d channels, want 2", len(endp.Channels))
+	}
+	if len(endp.GetFilterTypes()) != 0 {
+		t.Errorf("got %d filter types, want 0", len(endp.GetFilterTypes()))
+	}
 	endpPatch := svix.EndpointPatch{}
 	endpPatch.SetFilterTypes([]string{"event.started", "event.ended"})
 
@@ -93,4 +100,20 @@ func TestKitchenSink(t *testing.T) {
 			t.Fatalf("unexpected filter type: `%s`", typ)
 		}
 	}
+
+	endpPatch2 := svix.EndpointPatch{
+		Channels: nil,
+	}
+	patched2, err := client.Endpoint.Patch(ctx, app.Id, endp.Id, &endpPatch2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(patched2.Channels) > 0 {
+		t.Fatalf("expected patched channels to be empty: %v", patched2.Channels)
+	}
+
+	err = client.Endpoint.Delete(ctx, app.Id, endp.Id)
+	if err != nil {
+		t.Fatalf("unexpected error on delete: %s", err.Error())
+	}
 }