diff --git a/CHANGES.md b/CHANGES.md
index 5e78da79..7e35f4a7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,11 @@ Notable changes between versions.
 
 * Kubernetes [v1.13.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1131)
 
+#### Google Cloud
+
+* Increase TCP proxy apiserver backend service timeout from 1 minute to 5 minutes ([#361](https://github.com/poseidon/typhoon/pull/361))
+  * Align `port-forward` behavior closer to AWS/Azure (no timeout)
+
 #### Addons
 
 * Update Grafana from v5.4.0 to v5.4.2
diff --git a/google-cloud/container-linux/kubernetes/apiserver.tf b/google-cloud/container-linux/kubernetes/apiserver.tf
index ffeb8cd6..883feb24 100644
--- a/google-cloud/container-linux/kubernetes/apiserver.tf
+++ b/google-cloud/container-linux/kubernetes/apiserver.tf
@@ -42,7 +42,7 @@ resource "google_compute_backend_service" "apiserver" {
   protocol         = "TCP"
   port_name        = "apiserver"
   session_affinity = "NONE"
-  timeout_sec      = "60"
+  timeout_sec      = "300"
 
   # controller(s) spread across zonal instance groups
   backend {
diff --git a/google-cloud/fedora-atomic/kubernetes/apiserver.tf b/google-cloud/fedora-atomic/kubernetes/apiserver.tf
index 002c553e..b56a4e7b 100644
--- a/google-cloud/fedora-atomic/kubernetes/apiserver.tf
+++ b/google-cloud/fedora-atomic/kubernetes/apiserver.tf
@@ -42,7 +42,7 @@ resource "google_compute_backend_service" "apiserver" {
   protocol         = "TCP"
   port_name        = "apiserver"
   session_affinity = "NONE"
-  timeout_sec      = "60"
+  timeout_sec      = "300"
 
   # controller(s) spread across zonal instance groups
   backend {