diff --git a/.envrc b/.envrc
deleted file mode 100644
index a63eb96..0000000
--- a/.envrc
+++ /dev/null
@@ -1 +0,0 @@
-use asdf
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d3d9270..d7e74e6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -24,7 +24,6 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version-file: ./go.mod
-          cache: false
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
@@ -55,6 +54,38 @@ jobs:
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
+  trivy:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      security-events: write
+      actions: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: ./go.mod
+
+      - name: Download Go modules
+        run: go mod download
+
+      - name: Run Trivy vulnerability scanner in repo mode
+        uses: aquasecurity/trivy-action@0.24.0
+        with:
+          scan-type: "fs"
+          format: "sarif"
+          output: "trivy-results.sarif"
+
+      - name: Upload Trivy scan results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: "trivy-results.sarif"
+
   build:
     runs-on: ubuntu-latest
 
diff --git a/.mise.toml b/.mise.toml
new file mode 100644
index 0000000..b6eea30
--- /dev/null
+++ b/.mise.toml
@@ -0,0 +1,2 @@
+[tools]
+go = "1.22.5"
diff --git a/.tool-versions b/.tool-versions
deleted file mode 100644
index 009efa3..0000000
--- a/.tool-versions
+++ /dev/null
@@ -1 +0,0 @@
-golang 1.22.5