diff --git a/charts/tidb-cluster/values.yaml b/charts/tidb-cluster/values.yaml
index 79c537010bc..b24ca97136c 100644
--- a/charts/tidb-cluster/values.yaml
+++ b/charts/tidb-cluster/values.yaml
@@ -38,7 +38,7 @@ services:
     type: ClusterIP
 
 discovery:
-  image: pingcap/tidb-operator:v1.1.9
+  image: pingcap/tidb-operator:v1.2.0-alpha.1
   imagePullPolicy: IfNotPresent
   resources:
     limits:
diff --git a/charts/tidb-operator/values.yaml b/charts/tidb-operator/values.yaml
index e35058efba5..b25b2d3c3f8 100644
--- a/charts/tidb-operator/values.yaml
+++ b/charts/tidb-operator/values.yaml
@@ -12,12 +12,12 @@ rbac:
 timezone: UTC
 
 # operatorImage is TiDB Operator image
-operatorImage: pingcap/tidb-operator:v1.1.9
+operatorImage: pingcap/tidb-operator:v1.2.0-alpha.1
 imagePullPolicy: IfNotPresent
 # imagePullSecrets: []
 
 # tidbBackupManagerImage is tidb backup manager image
-tidbBackupManagerImage: pingcap/tidb-backup-manager:v1.1.9
+tidbBackupManagerImage: pingcap/tidb-backup-manager:v1.2.0-alpha.1
 
 #
 # Enable or disable tidb-operator features:
diff --git a/deploy/aliyun/variables.tf b/deploy/aliyun/variables.tf
index a80f71ceb60..2ab986f6998 100644
--- a/deploy/aliyun/variables.tf
+++ b/deploy/aliyun/variables.tf
@@ -10,7 +10,7 @@ variable "bastion_cpu_core_count" {
 
 variable "operator_version" {
   type    = string
-  default = "v1.1.9"
+  default = "v1.2.0-alpha.1"
 }
 
 variable "operator_helm_values" {
diff --git a/deploy/aws/variables.tf b/deploy/aws/variables.tf
index c4096c5de1a..3245f6a08c8 100644
--- a/deploy/aws/variables.tf
+++ b/deploy/aws/variables.tf
@@ -19,7 +19,7 @@ variable "eks_version" {
 
 variable "operator_version" {
   description = "TiDB operator version"
-  default     = "v1.1.9"
+  default     = "v1.2.0-alpha.1"
 }
 
 variable "operator_values" {
diff --git a/deploy/gcp/variables.tf b/deploy/gcp/variables.tf
index ece6ad66705..0cf3f9ccff5 100644
--- a/deploy/gcp/variables.tf
+++ b/deploy/gcp/variables.tf
@@ -28,7 +28,7 @@ variable "tidb_version" {
 }
 
 variable "tidb_operator_version" {
-  default = "v1.1.9"
+  default = "v1.2.0-alpha.1"
 }
 
 variable "tidb_operator_chart_version" {
diff --git a/hack/bump-version.sh b/hack/bump-version.sh
index a7fec9f82e5..6e66aea8a61 100755
--- a/hack/bump-version.sh
+++ b/hack/bump-version.sh
@@ -22,9 +22,9 @@ if [[ "$OSTYPE" == "darwin"* ]]; then
 fi
 
 # parameters
-OPERATOR_OLD="v1\.1\.8"
-OPERATOR_NEW="v1\.1\.9"
-TIDB_OLD="v4\.0\.8"
+OPERATOR_OLD="v1\.1\.9"
+OPERATOR_NEW="v1\.2\.0-alpha\.1"
+TIDB_OLD="v4\.0\.9"
 TIDB_NEW="v4\.0\.9"
 
 find ./deploy -name "*\.tf"| xargs $SED_BIN -i "s/$OPERATOR_OLD/$OPERATOR_NEW/g"