diff --git a/config/core/deployments/webhook.yaml b/config/core/deployments/webhook.yaml
index eb361b147f52..aa445431c6b0 100644
--- a/config/core/deployments/webhook.yaml
+++ b/config/core/deployments/webhook.yaml
@@ -85,6 +85,10 @@ spec:
               value: "webhook"
         livenessProbe: *probe
 
+      # Our webhook should gracefully terminate by lame ducking first, set this to a sufficiently
+      # high value that we respect whatever value it has configured for the lame duck grace period.
+      terminationGracePeriodSeconds: 300
+
 ---
 apiVersion: v1
 kind: Service