diff --git a/.github/workflows/validation.yaml b/.github/workflows/validation.yaml
index f9c8119..d7c7e2a 100644
--- a/.github/workflows/validation.yaml
+++ b/.github/workflows/validation.yaml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.20.7'
+          go-version: '1.21.0'
       - name: Setup
         run: |
           go mod download
diff --git a/NOTICE.md b/NOTICE.md
index 9563fe0..9c50193 100644
--- a/NOTICE.md
+++ b/NOTICE.md
@@ -148,11 +148,11 @@ gorilla/websocket (1.4.2)
 * Project: https://github.com/gorilla/websocket
 * Source:  https://github.com/gorilla/websocket/releases/tag/v1.4.2
 
-golang/go (1.20.7)
+golang/go (1.21.0)
 
 * License: BSD 3-Clause "New" or "Revised" License
 * Project: https://github.com/golang/go
-* Source:  https://github.com/golang/go/releases/tag/go1.20.7
+* Source:  https://github.com/golang/go/releases/tag/go1.21.0
 
 golang.org/x/text (v0.7.0)