diff --git a/.github/workflows/govuln.yaml b/.github/workflows/govuln.yaml
index bf67ae27..4c0bcbe0 100644
--- a/.github/workflows/govuln.yaml
+++ b/.github/workflows/govuln.yaml
@@ -7,6 +7,6 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.20.7"
+          go-version: "1.21.1"
       - run: date
       - run: go install golang.org/x/vuln/cmd/govulncheck@latest && govulncheck ./...
diff --git a/.github/workflows/static-analysis.yaml b/.github/workflows/static-analysis.yaml
index 82a2593f..ffe65514 100644
--- a/.github/workflows/static-analysis.yaml
+++ b/.github/workflows/static-analysis.yaml
@@ -7,7 +7,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.20.7"
+          go-version: "1.21.1"
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 6e26e751..a2ee3efe 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.20.7"
+          go-version: "1.21.1"
       - env:
           TARGET: ${{ matrix.target }}
         run: |
diff --git a/go.mod b/go.mod
index 0109d643..f8e20983 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module go.etcd.io/raft/v3
 
-go 1.20
+go 1.21
 
 require (
 	github.com/cockroachdb/datadriven v1.0.2
diff --git a/tools/mod/go.mod b/tools/mod/go.mod
index 30756669..166665d2 100644
--- a/tools/mod/go.mod
+++ b/tools/mod/go.mod
@@ -1,6 +1,6 @@
 module go.etcd.io/raft/tools/v3
 
-go 1.20
+go 1.21
 
 require (
 	github.com/alexkohler/nakedret v1.0.0