diff --git a/config/core/deployments/activator-hpa.yaml b/config/core/deployments/activator-hpa.yaml
index a4e0fefa55ed..85ddd54df771 100644
--- a/config/core/deployments/activator-hpa.yaml
+++ b/config/core/deployments/activator-hpa.yaml
@@ -50,7 +50,7 @@ metadata:
     app.kubernetes.io/name: knative-serving
     app.kubernetes.io/version: devel
 spec:
-  minAvailable: 1
+  minAvailable: 80%
   selector:
     matchLabels:
       app: activator
diff --git a/config/core/deployments/webhook-hpa.yaml b/config/core/deployments/webhook-hpa.yaml
index 15db14912e1c..a3afec4d6097 100644
--- a/config/core/deployments/webhook-hpa.yaml
+++ b/config/core/deployments/webhook-hpa.yaml
@@ -48,7 +48,7 @@ metadata:
     app.kubernetes.io/name: knative-serving
     app.kubernetes.io/version: devel
 spec:
-  minAvailable: 1
+  minAvailable: 80%
   selector:
     matchLabels:
       app: webhook
diff --git a/openshift/patches/005-pdb-minavailable.patch b/openshift/patches/005-pdb-minavailable.patch
deleted file mode 100644
index 1bb3d0393fea..000000000000
--- a/openshift/patches/005-pdb-minavailable.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-diff --git a/config/core/deployments/activator-hpa.yaml b/config/core/deployments/activator-hpa.yaml
-index 75c74798d..27ae13f2e 100644
---- a/config/core/deployments/activator-hpa.yaml
-+++ b/config/core/deployments/activator-hpa.yaml
-@@ -50,7 +50,7 @@ metadata:
-     app.kubernetes.io/name: knative-serving
-     app.kubernetes.io/version: devel
- spec:
--  minAvailable: 80%
-+  minAvailable: 1
-   selector:
-     matchLabels:
-       app: activator
-diff --git a/config/core/deployments/webhook-hpa.yaml b/config/core/deployments/webhook-hpa.yaml
-index 6a2ae587c..7c95f13bb 100644
---- a/config/core/deployments/webhook-hpa.yaml
-+++ b/config/core/deployments/webhook-hpa.yaml
-@@ -48,7 +48,7 @@ metadata:
-     app.kubernetes.io/name: knative-serving
-     app.kubernetes.io/version: devel
- spec:
--  minAvailable: 80%
-+  minAvailable: 1
-   selector:
-     matchLabels:
-       app: webhook
diff --git a/openshift/release/artifacts/serving-core.yaml b/openshift/release/artifacts/serving-core.yaml
index 4514a3d98bef..d6b12b2f0ca8 100644
--- a/openshift/release/artifacts/serving-core.yaml
+++ b/openshift/release/artifacts/serving-core.yaml
@@ -8749,7 +8749,7 @@ metadata:
     app.kubernetes.io/name: knative-serving
     app.kubernetes.io/version: "v1.16"
 spec:
-  minAvailable: 1
+  minAvailable: 80%
   selector:
     matchLabels:
       app: activator
@@ -9241,7 +9241,7 @@ metadata:
     app.kubernetes.io/name: knative-serving
     app.kubernetes.io/version: "v1.16"
 spec:
-  minAvailable: 1
+  minAvailable: 80%
   selector:
     matchLabels:
       app: webhook