diff --git a/requirements.txt b/requirements.txt
index 9d8c8ce..5b569e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ mistune==0.8.4
 mujoco-py==1.50.1.68
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.4
+notebook==6.4.12
 pandas==0.23.4
 pandocfilters==1.4.2
 pillow==5.3.0