diff --git a/requirements/testing/travis36.txt b/requirements/testing/travis36.txt
index 6b961fb5a6e4..e3197a4d4ac4 100644
--- a/requirements/testing/travis36.txt
+++ b/requirements/testing/travis36.txt
@@ -2,5 +2,6 @@
 
 ipykernel
 nbconvert[execute]
+nbformat!=5.0.0,!=5.0.1
 pandas!=0.25.0
 pytz