diff --git a/Dockerfile b/Dockerfile
index 4494301..0e6b6e5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,6 +26,6 @@ COPY . .
 RUN bundle exec jekyll build
 
 # Hosting Layer
-FROM nginx
+FROM nginx:1.21
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=0 /work/_site/ /usr/share/nginx/html/