diff --git a/Activity01/requirements.txt b/Activity01/requirements.txt
index fea4f34..e23a262 100644
--- a/Activity01/requirements.txt
+++ b/Activity01/requirements.txt
@@ -12,7 +12,7 @@ Flask-Caching==1.3.3
 Flask-Cors==3.0.3
 Flask-Testing==0.7.1
 h5py==2.7.1
-html5lib==0.9999999
+html5lib==0.999999999
 idna==2.6
 itsdangerous==0.24
 Jinja2==2.10