diff --git a/Class4/behave-basics/requirements.txt b/Class4/behave-basics/requirements.txt
index 7e65c9c..9cd28dd 100644
--- a/Class4/behave-basics/requirements.txt
+++ b/Class4/behave-basics/requirements.txt
@@ -4,4 +4,4 @@ selenium==3.141.0
 colorama==0.4.3
 openpyxl==3.0.3
 pillow==7.0.0
-pyyaml==5.3
\ No newline at end of file
+pyyaml==5.4
\ No newline at end of file