diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 67b1807..c4c8532 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -27,6 +27,14 @@ jobs:
         uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
         with:
           go-version: ${{ env.GO_VERSION }}
+      - name: Verify go.mod is tidy
+        run: |
+          go mod tidy
+          if [ -n "$(git status --porcelain go.mod go.sum)" ]; then
+            echo "go.mod or go.sum is not tidy"
+            git diff go.mod go.sum
+            exit 1
+          fi
       - name: Cache Go Dependencies
         uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
         with:
@@ -51,6 +59,14 @@ jobs:
         uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
         with:
           go-version: ${{ env.GO_VERSION }}
+      - name: Verify go.mod is tidy
+        run: |
+          go mod tidy
+          if [ -n "$(git status --porcelain go.mod go.sum)" ]; then
+            echo "go.mod or go.sum is not tidy"
+            git diff go.mod go.sum
+            exit 1
+          fi
       - name: Build
         run: |
           make build