diff --git a/proglib.io/covid-19-in-USA-gif/requirements.txt b/proglib.io/covid-19-in-USA-gif/requirements.txt
index 9db48b5..5e4c0b9 100644
--- a/proglib.io/covid-19-in-USA-gif/requirements.txt
+++ b/proglib.io/covid-19-in-USA-gif/requirements.txt
@@ -33,7 +33,7 @@ mistune==0.8.4
 moviepy==1.0.2
 nbconvert==5.6.1
 nbformat==5.0.3
-notebook==6.0.2
+notebook==6.1.5
 numpy==1.18.3
 pandas==1.0.3
 pandocfilters==1.4.2