diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f2cbd66..adfbed2 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Run hadolint
-        uses: hadolint/hadolint-action@v3.3.0
+        uses: hadolint/hadolint-action@v3.4.0
         with:
           trusted-registries: docker.io,ghcr.io
   shell-scripts:
diff --git a/Dockerfile b/Dockerfile
index 8bef71d..d27a859 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@ RUN apk add --no-cache \
 ARG workdir=/var/www
 WORKDIR "${workdir}"
 
-HEALTHCHECK --interval=10s --start-period=90s CMD netstat -ltn | grep -c ":443"
+HEALTHCHECK --interval=10s --start-period=90s CMD [ "sh", "-c", "netstat -ltn | grep -c :443" ]
 
 ENV EXPIRATION_DAYS=30
 ENV NGINX_DOCUMENT_ROOT=/var/www/web