diff --git a/update_log.md b/update_log.md
index b7922223..b8b9b900 100644
--- a/update_log.md
+++ b/update_log.md
@@ -1,3 +1,7 @@
+# 2.1.797
+
+* fixed some dependency problems with facexlib and filterpy.
+
 # 2.1.793
 
 * Added many javascripts to improve user experience. Now users with small screen will always see full canvas without needing to scroll.