diff --git a/Dockerfile b/Dockerfile
index 0bb121c..87648df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,6 @@ RUN apk add --no-cache \
     libffi-dev
 
 # Plugin installieren
-RUN pip install --no-cache-dir mkdocs-to-pdf[all]
+RUN pip install --no-cache-dir mkdocs-to-pdf
 
 WORKDIR /docs