diff --git a/Dockerfile b/Dockerfile
index aa9d4a2..15b4cf9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,7 +29,7 @@ RUN wkhtmltopdf --enable-internal-links --enable-local-file-access --enable-java
     --dpi 600 \
     /pdf/index.html /pdf.pdf
 
-FROM nginxinc/nginx-unprivileged:1.26-alpine
+FROM nginxinc/nginx-unprivileged:1.27-alpine
 
 LABEL maintainer acend.ch
 LABEL org.opencontainers.image.title "acend.ch's Prometheus Basics Training"