diff --git a/Dockerfile b/Dockerfile
index a3bc79c5..3721df12 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,7 +30,7 @@ RUN wkhtmltopdf --enable-internal-links --enable-local-file-access \
     --dpi 600 \
     /pdf/index.html /pdf.pdf
 
-FROM docker.io/nginxinc/nginx-unprivileged:1.25-alpine
+FROM docker.io/nginxinc/nginx-unprivileged:1.26-alpine
 
 LABEL maintainer acend.ch
 LABEL org.opencontainers.image.title "acend.ch's Kubernetes Basics Training"