diff --git a/deploy/provider/aws/service-l4.yaml b/deploy/provider/aws/service-l4.yaml
index b8de049d6..c22f57927 100644
--- a/deploy/provider/aws/service-l4.yaml
+++ b/deploy/provider/aws/service-l4.yaml
@@ -6,7 +6,10 @@ metadata:
   labels:
     app: ingress-nginx
   annotations:
+    # Enable PROXY protocol
     service.beta.kubernetes.io/aws-load-balancer-proxy-protocol: '*'
+    # Increase the ELB idle timeout to avoid issues with WebSockets or Server-Sent Events.
+    service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: '3600'
 spec:
   type: LoadBalancer
   selector:
diff --git a/deploy/provider/aws/service-l7.yaml b/deploy/provider/aws/service-l7.yaml
index a1bb0b307..404c2c4af 100644
--- a/deploy/provider/aws/service-l7.yaml
+++ b/deploy/provider/aws/service-l7.yaml
@@ -12,6 +12,8 @@ metadata:
     service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
     # Map port 443
     service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "https"
+    # Increase the ELB idle timeout to avoid issues with WebSockets or Server-Sent Events.
+    service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: '3600'
 spec:
   type: LoadBalancer
   selector: