diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 0ee3fe8..567bcf0 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -33,6 +33,7 @@
   - [Software and Tooling](./chapter3/software-tooling.md)
   - [Bash Scripts](./chapter3/bash.md)
   - [Job batching & SLURM](./chapter3/slurm.md)
+  - [Strudel](./chapter3/strudel.md)
   - [Challenges](./chapter3/challenges.md)
 
 - [Parallel Computing](./chapter4/chapter4.md)