diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e5c1ca292..fbed8c178 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Set up Go 1.14
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.14
+        go-version: 1.16
 
     - name: Test source code
       run:  script/test-source
diff --git a/.github/workflows/system.yml b/.github/workflows/system.yml
index 9c4628e67..b19c3c8a7 100644
--- a/.github/workflows/system.yml
+++ b/.github/workflows/system.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Set up Go 1.14
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.14
+        go-version: 1.16
 
     - name: check out
       uses: actions/checkout@v2
diff --git a/.github/workflows/upgrade.yml b/.github/workflows/upgrade.yml
index 55af2b02b..44679a7bc 100644
--- a/.github/workflows/upgrade.yml
+++ b/.github/workflows/upgrade.yml
@@ -11,10 +11,10 @@ jobs:
     #     backend: [sqlite, MySQL]
 
     steps:
-    - name: Set up Go 1.14
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.14
+        go-version: 1.16
 
     - name: Start local MySQL
       run: sudo /etc/init.d/mysql start
diff --git a/build.sh b/build.sh
index 1e8946f6a..02d1cb89f 100755
--- a/build.sh
+++ b/build.sh
@@ -84,8 +84,8 @@ function precheck() {
     ok=1
   fi
 
-  if ! go version | egrep -q 'go(1\.1[456])' ; then
-    echo "go version must be 1.14 or above"
+  if ! go version | egrep -q 'go(1\.1[6789])' ; then
+    echo "go version must be 1.16 or above"
     ok=1
   fi
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 530f7a375..7fb2d0ba4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -14,7 +14,7 @@
 # ORC_USER (default: orc_server_user): username used to login to orchestrator backend MySQL server
 # ORC_PASSWORD (default: orc_server_password): password used to login to orchestrator backend MySQL server
 
-FROM golang:1.14.4-alpine3.12 as build
+FROM golang:1.16.6-alpine3.14 as build
 
 ENV GOPATH=/tmp/go
 
@@ -28,7 +28,7 @@ RUN rsync -av $(find /tmp/orchestrator-release -type d -name orchestrator -maxde
 RUN rsync -av $(find /tmp/orchestrator-release -type d -name orchestrator-client -maxdepth 2)/ /
 RUN cp conf/orchestrator-sample-sqlite.conf.json /etc/orchestrator.conf.json
 
-FROM alpine:3.8
+FROM alpine:3.14
 
 RUN apk --no-cache add bash curl jq
 
diff --git a/docker/Dockerfile.packaging b/docker/Dockerfile.packaging
index 214734cf7..29a651383 100644
--- a/docker/Dockerfile.packaging
+++ b/docker/Dockerfile.packaging
@@ -14,7 +14,7 @@
 # ORC_USER (default: orc_server_user): username used to login to orchestrator backend MySQL server
 # ORC_PASSWORD (default: orc_server_password): password used to login to orchestrator backend MySQL server
 
-FROM golang:1.14.4-stretch
+FROM golang:1.16.6-stretch
 
 RUN apt-get update
 RUN apt-get install -y ruby ruby-dev rubygems build-essential
diff --git a/docker/Dockerfile.raft b/docker/Dockerfile.raft
index 284d98ceb..91b898f15 100644
--- a/docker/Dockerfile.raft
+++ b/docker/Dockerfile.raft
@@ -1,4 +1,4 @@
-FROM golang:1.14.4-stretch
+FROM golang:1.16.6-stretch
 LABEL maintainer="openark@github.com"
 
 RUN apt-get update -q -y
diff --git a/docker/Dockerfile.system b/docker/Dockerfile.system
index 3fe924c9f..f06e6dda7 100644
--- a/docker/Dockerfile.system
+++ b/docker/Dockerfile.system
@@ -1,4 +1,4 @@
-FROM golang:1.14.4-stretch
+FROM golang:1.16.6-stretch
 LABEL maintainer="openark@github.com"
 
 RUN apt-get update -q -y
diff --git a/docker/Dockerfile.test b/docker/Dockerfile.test
index 369a004e0..65f34195d 100644
--- a/docker/Dockerfile.test
+++ b/docker/Dockerfile.test
@@ -1,4 +1,4 @@
-FROM golang:1.14.4-stretch
+FROM golang:1.16.6-stretch
 LABEL maintainer="openark@github.com"
 
 RUN apt-get update
diff --git a/script/ensure-go-installed b/script/ensure-go-installed
index b3c05fc23..407c1baf6 100755
--- a/script/ensure-go-installed
+++ b/script/ensure-go-installed
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-PREFERRED_GO_VERSION=go1.14.4
-SUPPORTED_GO_VERSIONS='go1.1[456]'
+PREFERRED_GO_VERSION=go1.16.6
+SUPPORTED_GO_VERSIONS='go1.1[6789]'
 
 export ROOTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )"
 cd $ROOTDIR