diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0aa430f..726f0cc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v6
         with:
-          go-version: 1.24
+          go-version: 1.27
       - run: go mod download
       - run: go install golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest
       - run: go install golang.org/x/tools/cmd/goimports@latest
diff --git a/go.mod b/go.mod
index 9109a5a..a457f14 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/flopp/go-staticmaps
 
 go 1.23.0
 
-toolchain go1.24.4
+toolchain go1.27.0
 
 require (
 	github.com/flopp/go-coordsparser v0.0.0-20250311184423-61a7ff62d17c