diff --git a/tutorials/executable/basics.md b/tutorials/executable/basics.md
index 3376ed7..1a738a0 100644
--- a/tutorials/executable/basics.md
+++ b/tutorials/executable/basics.md
@@ -4,7 +4,7 @@ jupytext:
     extension: .md
     format_name: myst
     format_version: 0.13
-    jupytext_version: 1.16.4
+    jupytext_version: 1.17.1
 kernelspec:
   display_name: Python 3 (ipykernel)
   language: python
@@ -34,3 +34,22 @@ This cell has an expected error:
 
 1 / 0
 ```
+
+## Exercises
+
+Add one plus one.
+
+```{code-cell} ipython3
+# Write your solution here.
+```
+
+```{code-cell} ipython3
+---
+tags: [hide-cell]
+jupyter:
+  source_hidden: true
+---
+# Expand to reveal solution.
+
+1 + 1
+```