diff --git a/Dockerfile b/Dockerfile
index d96433f222..9a322f61f6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -237,7 +237,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build \
      && /build/gotestsum --version
 
 FROM base AS shfmt
-ARG SHFMT_VERSION=v3.0.2
+ARG SHFMT_VERSION=v3.6.0
 RUN --mount=type=cache,target=/root/.cache/go-build \
     --mount=type=cache,target=/go/pkg/mod \
         GOBIN=/build/ GO111MODULE=on go install "mvdan.cc/sh/v3/cmd/shfmt@${SHFMT_VERSION}" \
diff --git a/contrib/dockerize-disk.sh b/contrib/dockerize-disk.sh
index 744fc79d0f..84b5aa3003 100755
--- a/contrib/dockerize-disk.sh
+++ b/contrib/dockerize-disk.sh
@@ -103,8 +103,8 @@ cat > $builddir/result/$new_image_id/json <<- EOS
 EOS
 
 if [ -n "$docker_base_image" ]; then
- image_id=$(docker inspect -f "{{.Id}}" "$docker_base_image")
- echo ", \"parent\": \"$image_id\"" >> $builddir/result/$new_image_id/json
+	image_id=$(docker inspect -f "{{.Id}}" "$docker_base_image")
+	echo ", \"parent\": \"$image_id\"" >> $builddir/result/$new_image_id/json
 fi
 
 echo "}" >> $builddir/result/$new_image_id/json