diff --git a/doc/notebooks/binned_vs_unbinned.ipynb b/doc/notebooks/binned_vs_unbinned.ipynb
index 4ab65324..19f25bf5 100644
--- a/doc/notebooks/binned_vs_unbinned.ipynb
+++ b/doc/notebooks/binned_vs_unbinned.ipynb
@@ -1,5 +1,5 @@
 {
- "cells": [
+  "cells": [
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/doc/notebooks/interactive.ipynb b/doc/notebooks/interactive.ipynb
index 9e4e2254..95a4b63d 100644
--- a/doc/notebooks/interactive.ipynb
+++ b/doc/notebooks/interactive.ipynb
@@ -1,5 +1,5 @@
 {
- "cells": [
+  "cells": [
   {
    "attachments": {},
    "cell_type": "markdown",