diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 5e48eb0..0481820 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         # Oldest we support is 1.18, plus the latest two releases.
-        go-version: ['1.18', '1.19', '1.20']
+        go-version: ['1.18', '1.20', '1.21']
     runs-on: ubuntu-latest
 
     steps:
@@ -27,13 +27,13 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Check Go modules
-      if: matrix.go-version == '1.20'
+      if: matrix.go-version == '1.21'
       run: |
         go mod tidy
         git diff --exit-code
 
     - name: Check formatting
-      if: matrix.go-version == '1.20'
+      if: matrix.go-version == '1.21'
       run: diff -u <(echo -n) <(gofmt -d .)
 
     - name: Run tests on linux
diff --git a/.github/workflows/staticcheck.yml b/.github/workflows/staticcheck.yml
index 39549aa..944359f 100644
--- a/.github/workflows/staticcheck.yml
+++ b/.github/workflows/staticcheck.yml
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: '1.20'
+        go-version: '1.21'
 
     - name: Check out code
       uses: actions/checkout@v3