diff --git a/apis/duck/v1/addressable_types.go b/apis/duck/v1/addressable_types.go
index bdcb994fa..a855c3857 100644
--- a/apis/duck/v1/addressable_types.go
+++ b/apis/duck/v1/addressable_types.go
@@ -48,6 +48,10 @@ type Addressable struct {
 	// according to https://www.rfc-editor.org/rfc/rfc7468.
 	// +optional
 	CACerts *string `json:"CACerts,omitempty"`
+
+	// Audience is the OIDC audience for this address.
+	// +optional
+	Audience *string `json:"audience,omitempty"`
 }
 
 var (
diff --git a/apis/duck/v1/zz_generated.deepcopy.go b/apis/duck/v1/zz_generated.deepcopy.go
index 744a38bb0..61d9671eb 100644
--- a/apis/duck/v1/zz_generated.deepcopy.go
+++ b/apis/duck/v1/zz_generated.deepcopy.go
@@ -72,6 +72,11 @@ func (in *Addressable) DeepCopyInto(out *Addressable) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.Audience != nil {
+		in, out := &in.Audience, &out.Audience
+		*out = new(string)
+		**out = **in
+	}
 	return
 }