diff --git a/pkg/reconciler/brokercell/resources/deployments.go b/pkg/reconciler/brokercell/resources/deployments.go
index 547a27335f..4933114a71 100644
--- a/pkg/reconciler/brokercell/resources/deployments.go
+++ b/pkg/reconciler/brokercell/resources/deployments.go
@@ -26,6 +26,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"knative.dev/pkg/kmeta"
+	"knative.dev/pkg/ptr"
 	"knative.dev/pkg/system"
 )
 
@@ -44,7 +45,7 @@ func MakeIngressDeployment(args IngressArgs) *appsv1.Deployment {
 			},
 		},
 		FailureThreshold: 5,
-		PeriodSeconds:    2,
+		PeriodSeconds:    15,
 		SuccessThreshold: 1,
 		TimeoutSeconds:   5,
 	}
@@ -57,8 +58,8 @@ func MakeIngressDeployment(args IngressArgs) *appsv1.Deployment {
 			},
 		},
 		FailureThreshold:    5,
-		InitialDelaySeconds: 5,
-		PeriodSeconds:       2,
+		InitialDelaySeconds: 15,
+		PeriodSeconds:       15,
 		SuccessThreshold:    1,
 		TimeoutSeconds:      5,
 	}
@@ -135,6 +136,13 @@ func deploymentTemplate(args Args, containers []corev1.Container) *appsv1.Deploy
 		},
 		Spec: appsv1.DeploymentSpec{
 			Selector: &metav1.LabelSelector{MatchLabels: Labels(args.BrokerCell.Name, args.ComponentName)},
+			Strategy: appsv1.DeploymentStrategy{
+				RollingUpdate: &appsv1.RollingUpdateDeployment{
+					MaxSurge:       &intstr.IntOrString{IntVal: 1},
+					MaxUnavailable: &intstr.IntOrString{IntVal: 0},
+				},
+			},
+			MinReadySeconds: 60,
 			Template: corev1.PodTemplateSpec{
 				ObjectMeta: metav1.ObjectMeta{
 					Labels: Labels(args.BrokerCell.Name, args.ComponentName),
@@ -154,7 +162,8 @@ func deploymentTemplate(args Args, containers []corev1.Container) *appsv1.Deploy
 							VolumeSource: corev1.VolumeSource{Secret: &corev1.SecretVolumeSource{SecretName: "google-broker-key", Optional: &optionalSecretVolume}},
 						},
 					},
-					Containers: containers,
+					Containers:                    containers,
+					TerminationGracePeriodSeconds: ptr.Int64(60),
 				},
 			},
 		},
diff --git a/pkg/reconciler/brokercell/testingdata/fanout_deployment.yaml b/pkg/reconciler/brokercell/testingdata/fanout_deployment.yaml
index 04602477cf..d1b0b57f0a 100644
--- a/pkg/reconciler/brokercell/testingdata/fanout_deployment.yaml
+++ b/pkg/reconciler/brokercell/testingdata/fanout_deployment.yaml
@@ -32,6 +32,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: fanout
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -39,6 +44,7 @@ spec:
         sidecar.istio.io/inject: "false"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: fanout
         image: fanout
diff --git a/pkg/reconciler/brokercell/testingdata/fanout_deployment_with_status.yaml b/pkg/reconciler/brokercell/testingdata/fanout_deployment_with_status.yaml
index 250b15bf9a..58661fef71 100644
--- a/pkg/reconciler/brokercell/testingdata/fanout_deployment_with_status.yaml
+++ b/pkg/reconciler/brokercell/testingdata/fanout_deployment_with_status.yaml
@@ -33,6 +33,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: fanout
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -40,6 +45,7 @@ spec:
         sidecar.istio.io/inject: "false"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: fanout
         image: fanout
diff --git a/pkg/reconciler/brokercell/testingdata/ingress_deployment.yaml b/pkg/reconciler/brokercell/testingdata/ingress_deployment.yaml
index 3202ce8814..f75cab5d2c 100644
--- a/pkg/reconciler/brokercell/testingdata/ingress_deployment.yaml
+++ b/pkg/reconciler/brokercell/testingdata/ingress_deployment.yaml
@@ -32,6 +32,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: ingress
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -39,6 +44,7 @@ spec:
         sidecar.istio.io/inject: "true"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: ingress
         image: ingress
@@ -48,8 +54,8 @@ spec:
             path: /healthz
             port: 8080
             scheme: HTTP
-          initialDelaySeconds: 5
-          periodSeconds: 2
+          initialDelaySeconds: 15
+          periodSeconds: 15
           successThreshold: 1
           timeoutSeconds: 5
         readinessProbe:
@@ -58,7 +64,7 @@ spec:
             path: /healthz
             port: 8080
             scheme: HTTP
-          periodSeconds: 2
+          periodSeconds: 15
           successThreshold: 1
           timeoutSeconds: 5
         env:
diff --git a/pkg/reconciler/brokercell/testingdata/ingress_deployment_with_status.yaml b/pkg/reconciler/brokercell/testingdata/ingress_deployment_with_status.yaml
index 1a6fa201f4..24741e8f1a 100644
--- a/pkg/reconciler/brokercell/testingdata/ingress_deployment_with_status.yaml
+++ b/pkg/reconciler/brokercell/testingdata/ingress_deployment_with_status.yaml
@@ -33,6 +33,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: ingress
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -40,6 +45,7 @@ spec:
         sidecar.istio.io/inject: "true"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: ingress
         image: ingress
@@ -49,8 +55,8 @@ spec:
             path: /healthz
             port: 8080
             scheme: HTTP
-          initialDelaySeconds: 5
-          periodSeconds: 2
+          initialDelaySeconds: 15
+          periodSeconds: 15
           successThreshold: 1
           timeoutSeconds: 5
         readinessProbe:
@@ -59,7 +65,7 @@ spec:
             path: /healthz
             port: 8080
             scheme: HTTP
-          periodSeconds: 2
+          periodSeconds: 15
           successThreshold: 1
           timeoutSeconds: 5
         env:
diff --git a/pkg/reconciler/brokercell/testingdata/retry_deployment.yaml b/pkg/reconciler/brokercell/testingdata/retry_deployment.yaml
index ca70471805..4456e007d8 100644
--- a/pkg/reconciler/brokercell/testingdata/retry_deployment.yaml
+++ b/pkg/reconciler/brokercell/testingdata/retry_deployment.yaml
@@ -32,6 +32,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: retry
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -39,6 +44,7 @@ spec:
         sidecar.istio.io/inject: "false"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: retry
         image: retry
diff --git a/pkg/reconciler/brokercell/testingdata/retry_deployment_with_status.yaml b/pkg/reconciler/brokercell/testingdata/retry_deployment_with_status.yaml
index 586a0d2e1e..0467979a01 100644
--- a/pkg/reconciler/brokercell/testingdata/retry_deployment_with_status.yaml
+++ b/pkg/reconciler/brokercell/testingdata/retry_deployment_with_status.yaml
@@ -33,6 +33,11 @@ spec:
       app: cloud-run-events
       brokerCell: test-brokercell
       role: retry
+  minReadySeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
   template:
     metadata:
       labels: *labels
@@ -40,6 +45,7 @@ spec:
         sidecar.istio.io/inject: "false"
     spec:
       serviceAccountName: broker
+      terminationGracePeriodSeconds: 60
       containers:
       - name: retry
         image: retry
diff --git a/pkg/reconciler/utils/deployment.go b/pkg/reconciler/utils/deployment.go
index 1f1d8c8935..92adf9c806 100644
--- a/pkg/reconciler/utils/deployment.go
+++ b/pkg/reconciler/utils/deployment.go
@@ -25,6 +25,7 @@ import (
 	"k8s.io/client-go/kubernetes"
 	appsv1listers "k8s.io/client-go/listers/apps/v1"
 	"k8s.io/client-go/tools/record"
+	"knative.dev/pkg/ptr"
 )
 
 const (
@@ -54,6 +55,10 @@ func (r *DeploymentReconciler) ReconcileDeployment(obj runtime.Object, d *appsv1
 	if err != nil {
 		return nil, err
 	}
+	// Don't reconcile on replica difference.
+	if current.Spec.Replicas != nil {
+		d.Spec.Replicas = ptr.Int32(*current.Spec.Replicas)
+	}
 	if !equality.Semantic.DeepDerivative(d.Spec, current.Spec) {
 		// Don't modify the informers copy.
 		desired := current.DeepCopy()
diff --git a/pkg/reconciler/utils/deployment_test.go b/pkg/reconciler/utils/deployment_test.go
index 7556e2d9db..00e45807b8 100644
--- a/pkg/reconciler/utils/deployment_test.go
+++ b/pkg/reconciler/utils/deployment_test.go
@@ -24,6 +24,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	clientgotesting "k8s.io/client-go/testing"
+	"knative.dev/pkg/ptr"
 	pkgreconcilertesting "knative.dev/pkg/reconciler/testing"
 )
 
@@ -41,6 +42,10 @@ var (
 		ObjectMeta: metav1.ObjectMeta{Namespace: "testns", Name: "test"},
 		Spec:       appsv1.DeploymentSpec{MinReadySeconds: 20},
 	}
+	deploymentWithReplicas = &appsv1.Deployment{
+		ObjectMeta: metav1.ObjectMeta{Namespace: "testns", Name: "test"},
+		Spec:       appsv1.DeploymentSpec{MinReadySeconds: 10, Replicas: ptr.Int32(3)},
+	}
 
 	deploymentCreateFailure = pkgreconcilertesting.InduceFailure("create", "deployments")
 	deploymentUpdateFailure = pkgreconcilertesting.InduceFailure("update", "deployments")
@@ -94,6 +99,14 @@ func TestDeploymentReconciler(t *testing.T) {
 			},
 			in: deployment,
 		},
+		{
+			commonCase: commonCase{
+				name:     "deployment exists with different replicas",
+				existing: []runtime.Object{deploymentWithReplicas},
+			},
+			in:   deployment,
+			want: deploymentWithReplicas,
+		},
 	}
 
 	for _, test := range tests {