diff --git a/requirements.txt b/requirements.txt
index 447a684..df4cac3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ MarkupSafe==1.0
 matplotlib==2.1.2
 mistune==0.8.3
 -e git+https://github.com/openai/mujoco-py.git@6ac6ac203a875ef35b1505827264cadccbfd9f05#egg=mujoco_py
-nbconvert==5.3.1
+nbconvert==6.5.1
 nbformat==4.4.0
 notebook==5.4.0
 numpy==1.14.0