diff --git a/P05_WantToPredictYourResult/env_files/requirements.txt b/P05_WantToPredictYourResult/env_files/requirements.txt
index 4dfe207e..32f81ac2 100644
--- a/P05_WantToPredictYourResult/env_files/requirements.txt
+++ b/P05_WantToPredictYourResult/env_files/requirements.txt
@@ -45,7 +45,7 @@ keyring==17.1.1
 keyrings.alt==3.1.1
 lazy-object-proxy==1.3.1
 lockfile==0.12.2
-lxml==4.3.3
+lxml==4.6.3
 Markdown==3.0.1
 MarkupSafe==1.1.0
 mccabe==0.6.1