diff --git a/docs/requirements.txt b/docs/requirements.txt
index a8c1ea3c..e88f57e1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -41,7 +41,7 @@ matplotlib==2.0.2
 matplotlib-venn==0.11.5
 mccabe==0.6.1
 mistune==0.8.1
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 numpy>=1.13.3
 numpydoc==0.8.0