diff --git a/src/dso/_watermark.py b/src/dso/_watermark.py
index 1c4b25d..11f2d00 100644
--- a/src/dso/_watermark.py
+++ b/src/dso/_watermark.py
@@ -4,7 +4,6 @@
 from abc import abstractmethod
 from importlib import resources
 from pathlib import Path
-from typing import Generic, TypeVar
 
 from PIL import Image, ImageDraw, ImageFont
 from pypdf import PdfReader, PdfWriter
@@ -12,10 +11,8 @@
 
 from dso import assets
 
-ImgType = TypeVar("ImgType")
 
-
-class Watermarker(Generic[ImgType]):
+class Watermarker:
     """
     Add watermarks to images
 
diff --git a/src/dso/templates/stage/quarto_r/src/.gitignore b/src/dso/templates/stage/quarto_r/src/.gitignore
index e2a7536..f88ec68 100644
--- a/src/dso/templates/stage/quarto_r/src/.gitignore
+++ b/src/dso/templates/stage/quarto_r/src/.gitignore
@@ -4,3 +4,4 @@
 *.rmarkdown
 /_quarto.yml
 /*_files/
+/*_cache/