diff --git a/api/v1alpha1/ext_proc_types.go b/api/v1alpha1/ext_proc_types.go
index 88da0123c0..95893d3c61 100644
--- a/api/v1alpha1/ext_proc_types.go
+++ b/api/v1alpha1/ext_proc_types.go
@@ -9,7 +9,7 @@ import (
 	gwapiv1 "sigs.k8s.io/gateway-api/apis/v1"
 )
 
-// +kubebuilder:validation:Enum=Streamed;Buffered;BufferedPartial
+// +kubebuilder:validation:Enum=Streamed;Buffered;BufferedPartial;FullDuplexStreamed
 type ExtProcBodyProcessingMode string
 
 const (
diff --git a/charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml b/charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
index 01cb6663b1..7e8fa5d33c 100644
--- a/charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
+++ b/charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
@@ -1003,6 +1003,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                         response:
@@ -1026,6 +1027,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                       type: object
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
index fb4f8bc752..d49a6046d2 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
@@ -1002,6 +1002,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                         response:
@@ -1025,6 +1026,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                       type: object
diff --git a/test/helm/gateway-crds-helm/all.out.yaml b/test/helm/gateway-crds-helm/all.out.yaml
index 2612431a81..a18c940126 100644
--- a/test/helm/gateway-crds-helm/all.out.yaml
+++ b/test/helm/gateway-crds-helm/all.out.yaml
@@ -22006,6 +22006,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                         response:
@@ -22029,6 +22030,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                       type: object
diff --git a/test/helm/gateway-crds-helm/envoy-gateway-crds.out.yaml b/test/helm/gateway-crds-helm/envoy-gateway-crds.out.yaml
index 9dc657ce74..65b9f354fb 100644
--- a/test/helm/gateway-crds-helm/envoy-gateway-crds.out.yaml
+++ b/test/helm/gateway-crds-helm/envoy-gateway-crds.out.yaml
@@ -4694,6 +4694,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                         response:
@@ -4717,6 +4718,7 @@ spec:
                               - Streamed
                               - Buffered
                               - BufferedPartial
+                              - FullDuplexStreamed
                               type: string
                           type: object
                       type: object