diff --git a/Containerisation/python-ide/requirements.txt b/Containerisation/python-ide/requirements.txt
index b4e628e..4a6234e 100644
--- a/Containerisation/python-ide/requirements.txt
+++ b/Containerisation/python-ide/requirements.txt
@@ -3,7 +3,7 @@ certifi==2016.2.28
 cycler==0.10.0
 decorator==4.1.2
 entrypoints==0.2.3
-html5lib==0.9999999
+html5lib==0.999999999
 ipykernel==4.6.1
 ipython==6.2.1
 ipython-genutils==0.2.0