diff --git a/.github/actions/lint/action.yml b/.github/actions/lint/action.yml
index 841badbed575..0e42ed1da3cf 100644
--- a/.github/actions/lint/action.yml
+++ b/.github/actions/lint/action.yml
@@ -7,7 +7,7 @@ runs:
     - name: Install Go
       uses: actions/setup-go@v4
       with:
-        go-version: 1.20.x
+        go-version: 1.21.x
         check-latest: true
     - name: Get golangci-lint version and download rules
       shell: bash
diff --git a/.github/workflows/arm-tests.yml b/.github/workflows/arm-tests.yml
index 30ac47dc7aff..ba901de0bb20 100644
--- a/.github/workflows/arm-tests.yml
+++ b/.github/workflows/arm-tests.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
           check-latest: true
       - name: Run tests
         run: |
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8ab4376129e2..5641199287f2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ env:
   LI_DOCKER_IMAGE_ID: "loadimpact/k6"
   DOCKER_IMAGE_ID: "grafana/k6"
   GHCR_IMAGE_ID: ${{ github.repository }}
-  DEFAULT_GO_VERSION: "1.20.x"
+  DEFAULT_GO_VERSION: "1.21.x"
 
 jobs:
   configure:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 6dac771964d3..4861ce7b0476 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
           check-latest: true
       - name: Check dependencies
         run: |
@@ -40,4 +40,4 @@ jobs:
         with:
           fetch-depth: 0
       - name: Run linters
-        uses: ./.github/actions/lint/
\ No newline at end of file
+        uses: ./.github/actions/lint/
diff --git a/.github/workflows/tc39.yml b/.github/workflows/tc39.yml
index 8c0a90ef542f..92d736e5becf 100644
--- a/.github/workflows/tc39.yml
+++ b/.github/workflows/tc39.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
           check-latest: true
       - name: Run tests
         run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cb18cab12fd6..b425f6f03f2a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.19.x]
+        go-version: [1.20.x]
         platform: [ubuntu-latest, windows-2019]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -87,7 +87,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.20.x]
+        go-version: [1.21.x]
         platform: [ubuntu-latest, windows-2019]
     runs-on: ${{ matrix.platform }}
     steps:
diff --git a/.github/workflows/xk6.yml b/.github/workflows/xk6.yml
index 84473739df37..dfd4906439e8 100644
--- a/.github/workflows/xk6.yml
+++ b/.github/workflows/xk6.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
           check-latest: true
       - name: Install Go tip
         if: matrix.go == 'tip'
diff --git a/Dockerfile b/Dockerfile
index a1f5affabad3..462ac9e3b894 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20-alpine3.17 as builder
+FROM golang:1.21-alpine3.17 as builder
 WORKDIR $GOPATH/src/go.k6.io/k6
 COPY . .
 RUN apk --no-cache add git=~2