diff --git a/gitattributes.txt b/gitattributes.txt
new file mode 100644
index 00000000..f24d9335
--- /dev/null
+++ b/gitattributes.txt
@@ -0,0 +1,3 @@
+*.ipynb filter=nbstripout
+*.zpln filter=nbstripout
+*.ipynb diff=ipynb
diff --git a/pyproject.toml b/pyproject.toml
index 3e7ec4ad..73bd9e6f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
+    "nbstripout>=0.8.0",
     "jupytext>=1.18.1",
     "pytest-xdist>=3.8.0",
     "pytest>=9.0.1",