diff --git a/Week_00/00_Overview.html b/Week_00/00_Overview.html
index f32c6c4..32f5f78 100644
--- a/Week_00/00_Overview.html
+++ b/Week_00/00_Overview.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_00/00a_DailyChallenge.html b/Week_00/00a_DailyChallenge.html
index 0569420..28a4370 100644
--- a/Week_00/00a_DailyChallenge.html
+++ b/Week_00/00a_DailyChallenge.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_00/00b_DailyResources.html b/Week_00/00b_DailyResources.html
index fb10a30..7ab0785 100644
--- a/Week_00/00b_DailyResources.html
+++ b/Week_00/00b_DailyResources.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_00/01_Errata.html b/Week_00/01_Errata.html
index ba80109..0c625b8 100644
--- a/Week_00/01_Errata.html
+++ b/Week_00/01_Errata.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/001_Overview.html b/Week_01/001_Overview.html
index a02665a..10c38a0 100644
--- a/Week_01/001_Overview.html
+++ b/Week_01/001_Overview.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/Lesson_01.html b/Week_01/Lesson_01.html
index 10c8f08..2f606a3 100644
--- a/Week_01/Lesson_01.html
+++ b/Week_01/Lesson_01.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/Lesson_02.html b/Week_01/Lesson_02.html
index e987c1c..d11db79 100644
--- a/Week_01/Lesson_02.html
+++ b/Week_01/Lesson_02.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/Lesson_03.html b/Week_01/Lesson_03.html
index f5524d4..f42ef04 100644
--- a/Week_01/Lesson_03.html
+++ b/Week_01/Lesson_03.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/Lesson_04.html b/Week_01/Lesson_04.html
index 0a32004..613f4af 100644
--- a/Week_01/Lesson_04.html
+++ b/Week_01/Lesson_04.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
diff --git a/Week_01/Lesson_05.html b/Week_01/Lesson_05.html
index d3e83c0..bc03947 100644
--- a/Week_01/Lesson_05.html
+++ b/Week_01/Lesson_05.html
@@ -259,6 +259,7 @@
Day 21 - Introduction to Regression Analysis in Python
Day 22: Implementing Multiple Linear Regression in Python
+Day 23 - Advanced Regression Techniques - Polynomial, Lasso, and Ridge Regression
@@ -778,7 +779,7 @@ Standard Library Highlights