diff --git a/go.mod b/go.mod
index e5611d1b35c..aa577e1c3d5 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.19
 require (
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/ahmetb/gen-crd-api-reference-docs v0.3.1-0.20220720053627-e327d0730470 // Waiting for https://github.com/ahmetb/gen-crd-api-reference-docs/pull/43/files to merge
-	github.com/cloudevents/sdk-go/v2 v2.15.1
+	github.com/cloudevents/sdk-go/v2 v2.15.2
 	github.com/containerd/containerd v1.7.14
 	github.com/go-git/go-git/v5 v5.11.0
 	github.com/google/go-cmp v0.6.0
diff --git a/go.sum b/go.sum
index dbc87d8a52e..83e3bce7fa6 100644
--- a/go.sum
+++ b/go.sum
@@ -244,8 +244,8 @@ github.com/cilium/ebpf v0.0.0-20200702112145-1c8d4c9ef775/go.mod h1:7cR51M8ViRLI
 github.com/cilium/ebpf v0.2.0/go.mod h1:To2CFviqOWL/M0gIMsvSMlqe7em/l1ALkX1PyjrX2Qs=
 github.com/cilium/ebpf v0.4.0/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cloudevents/sdk-go/v2 v2.15.1 h1:EZxXQFkzk8TSsxDBx8v18+KGwTYsGRyHNwtzZiHUk4E=
-github.com/cloudevents/sdk-go/v2 v2.15.1/go.mod h1:lL7kSWAE/V8VI4Wh0jbL2v/jvqsm6tjmaQBSvxcv4uE=
+github.com/cloudevents/sdk-go/v2 v2.15.2 h1:54+I5xQEnI73RBhWHxbI1XJcqOFOVJN85vb41+8mHUc=
+github.com/cloudevents/sdk-go/v2 v2.15.2/go.mod h1:lL7kSWAE/V8VI4Wh0jbL2v/jvqsm6tjmaQBSvxcv4uE=
 github.com/cloudflare/circl v1.3.3 h1:fE/Qz0QdIGqeWfnwq0RE0R7MI51s0M2E4Ga9kq5AEMs=
 github.com/cloudflare/circl v1.3.3/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
diff --git a/vendor/github.com/cloudevents/sdk-go/v2/protocol/http/protocol.go b/vendor/github.com/cloudevents/sdk-go/v2/protocol/http/protocol.go
index dba6fd7baa7..7ee3b8fe122 100644
--- a/vendor/github.com/cloudevents/sdk-go/v2/protocol/http/protocol.go
+++ b/vendor/github.com/cloudevents/sdk-go/v2/protocol/http/protocol.go
@@ -102,7 +102,10 @@ func New(opts ...Option) (*Protocol, error) {
 	}
 
 	if p.Client == nil {
-		p.Client = http.DefaultClient
+		// This is how http.DefaultClient is initialized. We do not just use
+		// that because when WithRoundTripper is used, it will change the client's
+		// transport, which would cause that transport to be used process-wide.
+		p.Client = &http.Client{}
 	}
 
 	if p.roundTripper != nil {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 7e804d41f9e..dee2217d653 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -304,7 +304,7 @@ github.com/cespare/xxhash/v2
 github.com/chrismellard/docker-credential-acr-env/pkg/credhelper
 github.com/chrismellard/docker-credential-acr-env/pkg/registry
 github.com/chrismellard/docker-credential-acr-env/pkg/token
-# github.com/cloudevents/sdk-go/v2 v2.15.1
+# github.com/cloudevents/sdk-go/v2 v2.15.2
 ## explicit; go 1.18
 github.com/cloudevents/sdk-go/v2
 github.com/cloudevents/sdk-go/v2/binding