diff --git a/go.mod b/go.mod
index d402305b6..58f4ee0e2 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,7 @@
 module github.com/fluxcd/notification-controller
 
-go 1.22.5
+go 1.23
+
 toolchain go1.23.1
 
 replace github.com/fluxcd/notification-controller/api => ./api
diff --git a/internal/server/receiver_handler_test.go b/internal/server/receiver_handler_test.go
index e460f72f1..2125ee8c2 100644
--- a/internal/server/receiver_handler_test.go
+++ b/internal/server/receiver_handler_test.go
@@ -145,7 +145,7 @@ func Test_handlePayload(t *testing.T) {
 					"id":            "5555",
 					"source":        "github",
 					"timestamp":     "2023-12-07T14:51:29.908479495Z",
-					"type":          "dev.cdevents.change.merged.0.1.2",
+					"type":          "dev.cdevents.change.merged.0.2.0",
 				},
 				"subject": map[string]string{
 					"type": "change",
@@ -191,7 +191,7 @@ func Test_handlePayload(t *testing.T) {
 					"id":            "5555",
 					"source":        "github",
 					"timestamp":     "2023-12-07T14:51:29.908479495Z",
-					"type":          "dev.cdevents.change.merged.0.1.2",
+					"type":          "dev.cdevents.change.merged.0.2.0",
 				},
 				"subject": map[string]string{
 					"type": "change",
@@ -236,7 +236,7 @@ func Test_handlePayload(t *testing.T) {
 					"id":            "5555",
 					"source":        "github",
 					"timestamp":     "2023-12-07T14:51:29.908479495Z",
-					"type":          "dev.cdevents.change.merged.0.1.2",
+					"type":          "dev.cdevents.change.merged.0.2.0",
 				},
 				"subject": map[string]string{
 					"type": "change",
diff --git a/internal/server/receiver_handlers.go b/internal/server/receiver_handlers.go
index 558c6082d..5c3dfd75b 100644
--- a/internal/server/receiver_handlers.go
+++ b/internal/server/receiver_handlers.go
@@ -32,6 +32,7 @@ import (
 	"time"
 
 	cdevents "github.com/cdevents/sdk-go/pkg/api"
+	cdevents04 "github.com/cdevents/sdk-go/pkg/api/v04"
 	"github.com/fluxcd/pkg/apis/meta"
 	"github.com/fluxcd/pkg/runtime/conditions"
 	"github.com/go-logr/logr"
@@ -205,7 +206,7 @@ func (s *ReceiverServer) validate(ctx context.Context, receiver apiv1.Receiver,
 			return fmt.Errorf("unable to read CDEvent request body: %s", err)
 		}
 
-		cdevent, err := cdevents.NewFromJsonBytes(b)
+		cdevent, err := cdevents04.NewFromJsonBytes(b)
 		if err != nil {
 			return fmt.Errorf("unable to validate CDEvent event: %s", err)
 		}