diff --git a/.github/workflows/govulncheck.yml b/.github/workflows/govulncheck.yml
index 32a7d6b..fbb8bdf 100644
--- a/.github/workflows/govulncheck.yml
+++ b/.github/workflows/govulncheck.yml
@@ -3,8 +3,6 @@ on:
     branches:
       - main
   pull_request:
-  schedule: # Monday at 04:00 UTC
-    - cron: '0 4 * * Mon'
 
 permissions:
   contents: read
diff --git a/.github/workflows/govulnfix.yml b/.github/workflows/govulnfix.yml
new file mode 100644
index 0000000..3aec087
--- /dev/null
+++ b/.github/workflows/govulnfix.yml
@@ -0,0 +1,61 @@
+on:
+  workflow_dispatch:
+  schedule: # Monday at 04:00 UTC
+    - cron: '0 4 * * Mon'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+name: govulnfix
+jobs:
+  vulnfix:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Install Go
+        id: install-go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+
+      - name: Download dependencies
+        run: go mod download
+        if: steps.install-go.outputs.cache-hit != 'true'
+
+      - name: Install govulncheck
+        run: go install golang.org/x/vuln/cmd/govulncheck@latest
+
+      - name: Install vulnfix
+        run: go install github.com/hamba/vulnfix@latest
+
+      # govulncheck exits 3 when vulnerabilities are found; we want to continue to vulnfix, so we ignore the exit code.
+      - name: Run govulncheck
+        run: |
+          go run golang.org/x/vuln/cmd/govulncheck@latest -format json ./... > /tmp/govulncheck-output.json; ec=$?
+          [[ $ec -eq 0 || $ec -eq 3 ]] || exit $ec
+
+      # Switch to the latest version of Go to ensure vulnfix can update the version of Go.
+      - name: Install Latest Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1'
+          check-latest: true
+          cache: false
+
+      - name: Run vulnfix
+        run: vulnfix -o /tmp/vuln.md < /tmp/govulncheck-output.json
+
+      - name: Open Pull Request
+        uses: peter-evans/create-pull-request@v8
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: govulncheck/auto-fix
+          delete-branch: "true"
+          commit-message: "chore(deps): fix vulnerabilities reported by govulncheck"
+          title: "chore(deps): fix vulnerabilities reported by govulncheck"
+          body-path: /tmp/vuln.md
+          labels: security,dependencies
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a671996..5776354 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,6 +35,8 @@ jobs:
       matrix:
         go-version: [ "1.25", "1.26" ]
     runs-on: ubuntu-latest
+    env:
+      GOTESTSUM_VERSION: v1.13.0
 
     steps:
       - name: Checkout code
@@ -45,19 +47,26 @@ jobs:
         uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go-version }}
-          check-latest: true
+          check-latest: "true"
+
+      - name: Cache Go test cache
+        uses: actions/cache@v5
+        with:
+          path: /home/runner/.cache/go-test-cache
+          key: ${{ runner.os }}-go-testcache-${{ hashFiles('**/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-testcache-
 
       - name: Download dependencies
         run: go mod download
         if: steps.install-go.outputs.cache-hit != 'true'
 
       - name: Setup gotestsum
-        uses: gertd/action-gotestsum@v3.0.0
-        with:
-          gotestsum_version: v1.13.0
+        run: go install gotest.tools/gotestsum@${{ env.GOTESTSUM_VERSION }}
 
       - name: Run Tests
         run: gotestsum --format pkgname -- -covermode=atomic -coverprofile=coverage.out -race ./...
+        env:
+          GOCACHE: /home/runner/.cache/go-test-cache
 
       - name: Coveralls
         uses: coverallsapp/github-action@v2