diff --git a/requirements.txt b/requirements.txt
index dd5dfe8..47a98e6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 jupyter==1.0.0
 jupyterlab~=3.6.2
-nbformat=4.2
 openstef==3.4.7
\ No newline at end of file