diff --git a/(1)TutorialPython_IPYTHON/requirements.txt b/(1)TutorialPython_IPYTHON/requirements.txt
index 1f85101..5f266b5 100644
--- a/(1)TutorialPython_IPYTHON/requirements.txt
+++ b/(1)TutorialPython_IPYTHON/requirements.txt
@@ -8,7 +8,7 @@ atomicwrites==1.3.0
 attrs==19.1.0
 Babel==2.7.0
 backcall==0.1.0
-bleach==3.1.0
+bleach==3.1.4
 bokeh==1.2.0
 certifi==2019.6.16
 cffi==1.12.3