diff --git a/.github/workflows/run-staticcheck.yaml b/.github/workflows/run-staticcheck.yaml
index d375c23..21bdb20 100644
--- a/.github/workflows/run-staticcheck.yaml
+++ b/.github/workflows/run-staticcheck.yaml
@@ -37,6 +37,10 @@ jobs:
       - name: Run vet
         run: go vet -v ./...
 
+      - name: Check diff of gofmt
+        run: |
+            gofmt -s -w . && git diff --exit-code
+
       - name: Check diff of goimports
         run: |
             go install golang.org/x/tools/cmd/goimports@latest