diff --git a/README.md b/README.md
index 88d00b5a6..fdf9e102f 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ Harbor is hosted by the [Cloud Native Computing Foundation](https://cncf.io) (CN
 * **Role based access control**: Users access different repositories through 'projects' and a user can have different permission for images or Helm charts under a project.
 * **Policy based replication**: Images and charts can be replicated (synchronized) between multiple registry instances based on policies with using filters (repository, tag and label). Harbor automatically retries a replication if it encounters any errors. This can be used to assist loadbalancing, achieve high availability, and facilitate multi-datacenter deployments in hybrid and multi-cloud scenarios.
 * **Vulnerability Scanning**: Harbor scans images regularly for vulnerabilities and has policy checks to prevent vulnerable images from being deployed.
-* **LDAP/AD support**: Harbor integrates with existing enterprise LDAP/AD for user authentication and management, and supports importing LDAP groups into Harbor that can then be given permissions to specific projects.  
-* **OIDC support**: Harbor leverages OpenID Connect (OIDC) to verify the identity of users authenticated by an external authorization server or identity provider. Single sign-on can be enabled to log into the Harbor portal.  
+* **LDAP/AD support**: Harbor integrates with existing enterprise LDAP/AD for user authentication and management, and supports importing LDAP groups into Harbor that can then be given permissions to specific projects.
+* **OIDC support**: Harbor leverages OpenID Connect (OIDC) to verify the identity of users authenticated by an external authorization server or identity provider. Single sign-on can be enabled to log into the Harbor portal.
 * **Image deletion & garbage collection**: System admin can run garbage collection jobs so that images(dangling manifests and unreferenced blobs) can be deleted and their space can be freed up periodically.
 * **Notary**: Support signing container images using Docker Content Trust (leveraging Notary) for guaranteeing authenticity and provenance.  In addition, policies that prevent unsigned images from being deployed can also be activated.
 * **Graphical user portal**: User can easily browse, search repositories and manage projects.
@@ -55,7 +55,7 @@ For learning the architecture design of Harbor, check the document [Architecture
 
 **System requirements:**
 
-**On a Linux host:** docker 17.06.0-ce+ and docker-compose 1.18.0+ .
+**On a Linux host:** docker 20.10.10-ce+ and docker-compose 1.18.0+ .
 
 Download binaries of **[Harbor release ](https://github.com/vmware/harbor/releases)** and follow **[Installation & Configuration Guide](https://goharbor.io/docs/latest/install-config/)** to install Harbor.
 
@@ -77,8 +77,8 @@ The [compatibility list](https://goharbor.io/docs/edge/install-config/harbor-com
 
 ## Community
 
-* **Twitter:** [@project_harbor](https://twitter.com/project_harbor)  
-* **User Group:** Join Harbor user email group: [harbor-users@lists.cncf.io](https://lists.cncf.io/g/harbor-users) to get update of Harbor's news, features, releases, or to provide suggestion and feedback.  
+* **Twitter:** [@project_harbor](https://twitter.com/project_harbor)
+* **User Group:** Join Harbor user email group: [harbor-users@lists.cncf.io](https://lists.cncf.io/g/harbor-users) to get update of Harbor's news, features, releases, or to provide suggestion and feedback.
 * **Developer Group:** Join Harbor developer group: [harbor-dev@lists.cncf.io](https://lists.cncf.io/g/harbor-dev) for discussion on Harbor development and contribution.
 * **Slack:** Join Harbor's community for discussion and ask questions: [Cloud Native Computing Foundation](https://slack.cncf.io/), channel: [#harbor](https://cloud-native.slack.com/messages/harbor/) and [#harbor-dev](https://cloud-native.slack.com/messages/harbor-dev/)
 
diff --git a/make/common.sh b/make/common.sh
index e48b69bce..8628984ad 100644
--- a/make/common.sh
+++ b/make/common.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-#docker version: 17.06.0+
+#docker version: 20.10.10+
 #docker-compose version: 1.18.0+
 #golang version: 1.12.0+
 
@@ -78,7 +78,7 @@ function check_golang {
 function check_docker {
 	if ! docker --version &> /dev/null
 	then
-		error "Need to install docker(17.06.0+) first and run this script again."
+		error "Need to install docker(20.10.10+) first and run this script again."
 		exit 1
 	fi
 
@@ -93,7 +93,7 @@ function check_docker {
 		# the version of docker does not meet the requirement
 		if [ "$docker_version_part1" -lt 17 ] || ([ "$docker_version_part1" -eq 17 ] && [ "$docker_version_part2" -lt 6 ])
 		then
-			error "Need to upgrade docker package to 17.06.0+."
+			error "Need to upgrade docker package to 20.10.10+."
 			exit 1
 		fi
 	else