diff --git a/_docker/Dockerfile b/_docker/Dockerfile
index 5b3587f..6bfe04e 100644
--- a/_docker/Dockerfile
+++ b/_docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/nginx:1.21.3-alpine
+FROM docker.io/library/nginx:1.21.4-alpine
 
 COPY ./public/ /usr/share/nginx/html/