diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 7cd1a83..0b33159 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -14,7 +14,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.26'
         check-latest: true
     - uses: dominikh/staticcheck-action@v1
       with:
diff --git a/go.mod b/go.mod
index e03a3d4..0ad4cff 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/abekoh/simple-db
 
 go 1.25.0
 
-toolchain go1.25.5
+toolchain go1.26.1
 
 require (
 	github.com/brianvoe/gofakeit/v7 v7.14.1