diff --git a/_lectures/lecture23.md b/_lectures/lecture23.md
new file mode 100644
index 0000000..c7c45e2
--- /dev/null
+++ b/_lectures/lecture23.md
@@ -0,0 +1,10 @@
+---
+title: "Lecture 23"
+id: "23"
+# notes: "/assets/lectures/lecture_15_notes.pdf"
+slides: "https://www.dropbox.com/scl/fi/o2xyqjgun2t5stdptcvzy/lecture23_slides.pdf?rlkey=14rsyktqz3bc0814wp1czpq3x&st=7w142o2w&dl=0"
+# recording: "https://canvas.mit.edu/courses/28217/external_tools/369"
+# additional_links:
+#   - name: "Extra Derivations"
+#     link: "https://www.dropbox.com/scl/fi/qllxb2aq4rnhi1k016ftm/lecture21_derivations.pdf?rlkey=y4919wyfn68oz99pspxugu1hd&st=dbxh063y&dl=0"
+---
diff --git a/main/Lectures.md b/main/Lectures.md
index 54c65f1..d64eefa 100644
--- a/main/Lectures.md
+++ b/main/Lectures.md
@@ -7,7 +7,7 @@ nav_order: 2
 
 Lecture recordings are uploaded to [Panopto](https://mit.hosted.panopto.com/Panopto/Pages/Sessions/List.aspx#folderID=%22b2079bc7-0ca3-4fdf-a3e5-b1d4014c37ee%22).
 
-{% assign limit_value = 22 %}  <!-- Set this to the number of lectures to display-->
+{% assign limit_value = 23 %}  <!-- Set this to the number of lectures to display-->
 {% assign sorted_lectures = site.lectures | sort: 'id' %}
 {% assign filtered_lectures = sorted_lectures | slice: 0, limit_value %}