diff --git a/pkg/model/gcemodel/autoscalinggroup.go b/pkg/model/gcemodel/autoscalinggroup.go
index 20b8bd64e133f..1c59a9f4d3f71 100644
--- a/pkg/model/gcemodel/autoscalinggroup.go
+++ b/pkg/model/gcemodel/autoscalinggroup.go
@@ -332,13 +332,19 @@ func (b *AutoscalingGroupModelBuilder) Build(c *fi.CloudupModelBuilderContext) e
 
 		for zone, targetSize := range instanceCountByZone {
 			name := gce.NameForInstanceGroupManager(b.Cluster.ObjectMeta.Name, ig.ObjectMeta.Name, zone)
+			updatePolicy := &gcetasks.UpdatePolicy{
+				MaxSurgeFixed:       1,
+				MaxUnavailableFixed: 1,
+				MinimalAction:       "REPLACE",
+				Type:                "OPPORTUNISTIC",
+			}
 
 			t := &gcetasks.InstanceGroupManager{
 				Name:                        s(name),
 				Lifecycle:                   b.Lifecycle,
 				Zone:                        s(zone),
 				TargetSize:                  fi.PtrTo(int64(targetSize)),
-				UpdatePolicy:                &gcetasks.UpdatePolicy{MinimalAction: "REPLACE", Type: "OPPORTUNISTIC"},
+				UpdatePolicy:                updatePolicy,
 				BaseInstanceName:            s(ig.ObjectMeta.Name),
 				InstanceTemplate:            instanceTemplate,
 				ListManagedInstancesResults: "PAGINATED",
diff --git a/tests/integration/update_cluster/ha_gce/kubernetes.tf b/tests/integration/update_cluster/ha_gce/kubernetes.tf
index 96934ede7c847..3400db34a1422 100644
--- a/tests/integration/update_cluster/ha_gce/kubernetes.tf
+++ b/tests/integration/update_cluster/ha_gce/kubernetes.tf
@@ -501,8 +501,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-ha-gce-exa
   name                           = "a-master-us-test1-a-ha-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-ha-gce-example-com.self_link
@@ -519,8 +521,10 @@ resource "google_compute_instance_group_manager" "a-nodes-ha-gce-example-com" {
   name                           = "a-nodes-ha-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-ha-gce-example-com.self_link
@@ -537,8 +541,10 @@ resource "google_compute_instance_group_manager" "b-master-us-test1-b-ha-gce-exa
   name                           = "b-master-us-test1-b-ha-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-b-ha-gce-example-com.self_link
@@ -555,8 +561,10 @@ resource "google_compute_instance_group_manager" "b-nodes-ha-gce-example-com" {
   name                           = "b-nodes-ha-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-ha-gce-example-com.self_link
@@ -573,8 +581,10 @@ resource "google_compute_instance_group_manager" "c-master-us-test1-c-ha-gce-exa
   name                           = "c-master-us-test1-c-ha-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-c-ha-gce-example-com.self_link
@@ -591,8 +601,10 @@ resource "google_compute_instance_group_manager" "c-nodes-ha-gce-example-com" {
   name                           = "c-nodes-ha-gce-example-com"
   target_size                    = 0
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-ha-gce-example-com.self_link
diff --git a/tests/integration/update_cluster/many-addons-gce/kubernetes.tf b/tests/integration/update_cluster/many-addons-gce/kubernetes.tf
index d750cfc967a5b..bb71a22e7e6bd 100644
--- a/tests/integration/update_cluster/many-addons-gce/kubernetes.tf
+++ b/tests/integration/update_cluster/many-addons-gce/kubernetes.tf
@@ -429,8 +429,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-ex
   name                           = "a-master-us-test1-a-minimal-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-example-com.self_link
@@ -447,8 +449,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-example-com" {
   name                           = "a-nodes-minimal-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce/kubernetes.tf b/tests/integration/update_cluster/minimal_gce/kubernetes.tf
index 738f36adbfe6f..610809f75cf84 100644
--- a/tests/integration/update_cluster/minimal_gce/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce/kubernetes.tf
@@ -405,8 +405,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-example-com.self_link
@@ -423,8 +425,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-example-co
   name                           = "a-nodes-minimal-gce-example-com"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_dns-none/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_dns-none/kubernetes.tf
index 16de2b85cb292..015eef5370a0a 100644
--- a/tests/integration/update_cluster/minimal_gce_dns-none/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_dns-none/kubernetes.tf
@@ -469,8 +469,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-example-com.self_link
@@ -487,8 +489,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-example-co
   name                           = "a-nodes-minimal-gce-example-com"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_ilb/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_ilb/kubernetes.tf
index 0d5c877847501..ec4ef219f1696 100644
--- a/tests/integration/update_cluster/minimal_gce_ilb/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_ilb/kubernetes.tf
@@ -438,8 +438,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-ilb-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-ilb-example-com.self_link
@@ -456,8 +458,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-ilb-exampl
   name                           = "a-nodes-minimal-gce-ilb-example-com"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-ilb-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_ilb_longclustername/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_ilb_longclustername/kubernetes.tf
index ad16c3f4d38bb..f164408a00333 100644
--- a/tests/integration/update_cluster/minimal_gce_ilb_longclustername/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_ilb_longclustername/kubernetes.tf
@@ -438,8 +438,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-with-a-very-very-very-ve-j0fh8f"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-with-a-very-very-very-very-very-long-name-example-com.self_link
@@ -456,8 +458,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-with-a-ver
   name                           = "a-nodes-minimal-gce-with-a-very-very-very-very-very-long-qk78uj"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-with-a-very-very-very-very-very-long-name-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_longclustername/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_longclustername/kubernetes.tf
index bf85d2e47cd17..1d100a9c24b61 100644
--- a/tests/integration/update_cluster/minimal_gce_longclustername/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_longclustername/kubernetes.tf
@@ -405,8 +405,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-with-a-very-very-very-ve-j0fh8f"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-with-a-very-very-very-very-very-long-name-example-com.self_link
@@ -423,8 +425,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-with-a-ver
   name                           = "a-nodes-minimal-gce-with-a-very-very-very-very-very-long-qk78uj"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-with-a-very-very-very-very-very-long-name-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_plb/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_plb/kubernetes.tf
index 49ab7b00b580c..395f9383bd2cd 100644
--- a/tests/integration/update_cluster/minimal_gce_plb/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_plb/kubernetes.tf
@@ -462,8 +462,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   target_pools                   = [google_compute_target_pool.api-minimal-gce-plb-example-com.self_link]
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-plb-example-com.self_link
@@ -480,8 +482,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-plb-exampl
   name                           = "a-nodes-minimal-gce-plb-example-com"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-plb-example-com.self_link
diff --git a/tests/integration/update_cluster/minimal_gce_private/kubernetes.tf b/tests/integration/update_cluster/minimal_gce_private/kubernetes.tf
index 5c49ad915260f..d8939ea8651a8 100644
--- a/tests/integration/update_cluster/minimal_gce_private/kubernetes.tf
+++ b/tests/integration/update_cluster/minimal_gce_private/kubernetes.tf
@@ -405,8 +405,10 @@ resource "google_compute_instance_group_manager" "a-master-us-test1-a-minimal-gc
   name                           = "a-master-us-test1-a-minimal-gce-private-example-com"
   target_size                    = 1
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.master-us-test1-a-minimal-gce-private-example-com.self_link
@@ -423,8 +425,10 @@ resource "google_compute_instance_group_manager" "a-nodes-minimal-gce-private-ex
   name                           = "a-nodes-minimal-gce-private-example-com"
   target_size                    = 2
   update_policy {
-    minimal_action = "REPLACE"
-    type           = "OPPORTUNISTIC"
+    max_surge_fixed       = 1
+    max_unavailable_fixed = 1
+    minimal_action        = "REPLACE"
+    type                  = "OPPORTUNISTIC"
   }
   version {
     instance_template = google_compute_instance_template.nodes-minimal-gce-private-example-com.self_link
diff --git a/upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go b/upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go
index 5e0a68a02d964..2c7b36d02deb7 100644
--- a/upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go
+++ b/upup/pkg/fi/cloudup/gcetasks/instancegroupmanager.go
@@ -68,7 +68,12 @@ func (e *InstanceGroupManager) Find(c *fi.CloudupContext) (*InstanceGroupManager
 	actual.ListManagedInstancesResults = r.ListManagedInstancesResults
 
 	if policy := r.UpdatePolicy; policy != nil {
-		actual.UpdatePolicy = &UpdatePolicy{MinimalAction: policy.MinimalAction, Type: policy.Type}
+		actual.UpdatePolicy = &UpdatePolicy{
+			MinimalAction:       policy.MinimalAction,
+			Type:                policy.Type,
+			MaxSurgeFixed:       policy.MaxSurge.Fixed,
+			MaxUnavailableFixed: policy.MaxUnavailable.Fixed,
+		}
 	}
 
 	for _, targetPool := range r.TargetPools {
@@ -111,8 +116,10 @@ func (_ *InstanceGroupManager) RenderGCE(t *gce.GCEAPITarget, a, e, changes *Ins
 
 	if policy := e.UpdatePolicy; policy != nil {
 		i.UpdatePolicy = &compute.InstanceGroupManagerUpdatePolicy{
-			MinimalAction: policy.MinimalAction,
-			Type:          policy.Type,
+			MaxSurge:       &compute.FixedOrPercent{Fixed: policy.MaxSurgeFixed},
+			MaxUnavailable: &compute.FixedOrPercent{Fixed: policy.MaxUnavailableFixed},
+			MinimalAction:  policy.MinimalAction,
+			Type:           policy.Type,
 		}
 	}
 
@@ -199,8 +206,10 @@ type terraformInstanceGroupManager struct {
 }
 
 type terraformUpdatePolicy struct {
-	MinimalAction string `cty:"minimal_action"`
-	Type          string `cty:"type"`
+	MaxSurgeFixed       int64  `cty:"max_surge_fixed"`
+	MaxUnavailableFixed int64  `cty:"max_unavailable_fixed"`
+	MinimalAction       string `cty:"minimal_action"`
+	Type                string `cty:"type"`
 }
 
 type terraformVersion struct {
@@ -220,8 +229,10 @@ func (_ *InstanceGroupManager) RenderTerraform(t *terraform.TerraformTarget, a,
 	}
 	if policy := e.UpdatePolicy; policy != nil {
 		tf.UpdatePolicy = &terraformUpdatePolicy{
-			MinimalAction: policy.MinimalAction,
-			Type:          policy.Type,
+			MaxSurgeFixed:       policy.MaxSurgeFixed,
+			MaxUnavailableFixed: policy.MaxUnavailableFixed,
+			MinimalAction:       policy.MinimalAction,
+			Type:                policy.Type,
 		}
 	}
 	tf.Version = &terraformVersion{
diff --git a/upup/pkg/fi/cloudup/gcetasks/updatepolicy.go b/upup/pkg/fi/cloudup/gcetasks/updatepolicy.go
index 8a65f9395e1ca..98dffc1e3cce4 100644
--- a/upup/pkg/fi/cloudup/gcetasks/updatepolicy.go
+++ b/upup/pkg/fi/cloudup/gcetasks/updatepolicy.go
@@ -20,6 +20,9 @@ import "k8s.io/kops/upup/pkg/fi"
 
 // UpdatePolicy represents a GCE instance group manager UpdatePolicy
 type UpdatePolicy struct {
+	MaxSurgeFixed       int64
+	MaxUnavailableFixed int64
+
 	MinimalAction string
 	Type          string
 }