diff --git a/docs/chapter-4/section-1.md b/docs/chapter-4/section-1.md
index 7d5f98c..ac9f46a 100644
--- a/docs/chapter-4/section-1.md
+++ b/docs/chapter-4/section-1.md
@@ -1,6 +1,6 @@
 ---
 nav_order: 1
-parent: Chapter 2
+parent: Chapter 4
 ---
 # Section 1
 {: .no_toc }
diff --git a/docs/chapter-4/section-2.md b/docs/chapter-4/section-2.md
index f0ae802..e48d06c 100644
--- a/docs/chapter-4/section-2.md
+++ b/docs/chapter-4/section-2.md
@@ -1,6 +1,6 @@
 ---
 nav_order: 2
-parent: Chapter 2
+parent: Chapter 4
 ---
 # Section 2
 {: .no_toc }