diff --git a/Tutorial0_setup/requirements.txt b/Tutorial0_setup/requirements.txt
old mode 100755
new mode 100644
index bcf8941..1de5de1
--- a/Tutorial0_setup/requirements.txt
+++ b/Tutorial0_setup/requirements.txt
@@ -9,7 +9,7 @@ jupyter-core==4.4.0
 jupyterlab==0.35.4
 jupyterlab-server==0.2.0
 matplotlib==3.0.3
-nbconvert==5.4.1
+nbconvert==6.5.1
 nbdime==1.0.5
 nbformat==4.4.0
 notebook==5.7.8