diff --git a/CHANGELOG.md b/CHANGELOG.md
index ff099752..4076c942 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,11 @@ instructions, because git commits are used to generate release notes:
 
 <!-- scriv-insert-here -->
 
+<a id='changelog-18.2.1'></a>
+## v18.2.1 (2024-10-11)
+
+- [Feature] Introduced theme toggle feature with enable/disable option and runtime switch between light and dark modes. (by @hinakhadim)
+
 <a id='changelog-18.1.1'></a>
 ## v18.1.1 (2024-08-27)
 
diff --git a/tutorindigo/__about__.py b/tutorindigo/__about__.py
index 72013402..c1d3f829 100644
--- a/tutorindigo/__about__.py
+++ b/tutorindigo/__about__.py
@@ -1 +1 @@
-__version__ = "18.1.1"
+__version__ = "18.2.1"