diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e453dd35a..a567de4e1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -55,7 +55,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Update Go modules
@@ -141,7 +141,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Login to DockerHub
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 13b8cbf47..f41593764 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.18'
+          go-version: '1.19'
       - uses: actions/checkout@v3
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
@@ -99,7 +99,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Update Go modules
@@ -121,20 +121,20 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04, windows-2022, macos-12]
-        go_versions: [ '1.18', '1.19', '1.20' ]
+        go_versions: [ '1.19', '1.20', '1.21' ]
         exclude:
           # Only latest Go version for Windows and MacOS.
           - os: windows-2022
-            go_versions: '1.18'
+            go_versions: '1.19'
           - os: windows-2022
-            go_versions: '1.19'
-          - os: macos-12
-            go_versions: '1.18'
+            go_versions: '1.20'
           - os: macos-12
             go_versions: '1.19'
+          - os: macos-12
+            go_versions: '1.20'
           # Exclude latest Go version for Ubuntu as Coverage uses it.
           - os: ubuntu-20.04
-            go_versions: '1.20'
+            go_versions: '1.21'
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
diff --git a/Dockerfile b/Dockerfile
index debcff904..137f07393 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # Builder image
 # Keep go version in sync with Build GA job.
-FROM golang:1.20-alpine as builder
+FROM golang:1.21-alpine as builder
 
 # Display go version for information purposes.
 RUN go version
diff --git a/Dockerfile.wsc b/Dockerfile.wsc
index 25b35ff62..2e2ecce64 100644
--- a/Dockerfile.wsc
+++ b/Dockerfile.wsc
@@ -43,14 +43,14 @@ RUN $newPath = ('{0}\bin;C:\Program Files\Go\bin;{1}' -f $env:GOPATH, $env:PATH)
  	[Environment]::SetEnvironmentVariable('PATH', $newPath, [EnvironmentVariableTarget]::Machine);
 
 # Keep go version in sync with Build GA job.
-ENV GOLANG_VERSION=1.20
+ENV GOLANG_VERSION=1.21.3
 
-RUN $url = 'https://go.dev/dl/go1.20.windows-amd64.zip'; \
+RUN $url = 'https://dl.google.com/go/go1.21.3.windows-amd64.zip'; \
  	Write-Host ('Downloading {0} ...' -f $url); \
  	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
  	Invoke-WebRequest -Uri $url -OutFile 'go.zip'; \
  	\
-    $sha256 = 'e8f6d8bbcf3df58d2ba29818e13b04c2e42ba2e4d90d580720b21c34d10bbf68'; \
+    $sha256 = '27c8daf157493f288d42a6f38debc6a2cb391f6543139eba9152fceca0be2a10'; \
  	Write-Host ('Verifying sha256 ({0}) ...' -f $sha256); \
  	if ((Get-FileHash go.zip -Algorithm sha256).Hash -ne $sha256) { \
  	    Write-Host 'FAILED!'; \