diff --git a/classes.Rmd b/classes.Rmd
index 9f67a9d..1cf4f42 100644
--- a/classes.Rmd
+++ b/classes.Rmd
@@ -13,6 +13,7 @@ listing:
     - 2023-12-07-class-7-integrated-data-analysis
     - 2023-12-08-class-8-matricies
     - 2023-12-11-class-9-clustering
+    - 2023-12-12-class-10-heatmap
     - 2023-12-13-class-11-programming-pt-1
     - 2023-12-14-class-12-programming-pt-2
 ---