diff --git a/study-notes/mactalk-ai-course/requirements.txt b/study-notes/mactalk-ai-course/requirements.txt
index 548d644..1a0512e 100644
--- a/study-notes/mactalk-ai-course/requirements.txt
+++ b/study-notes/mactalk-ai-course/requirements.txt
@@ -18,7 +18,7 @@ blis==0.7.9
 boto3==1.26.165
 botocore==1.29.165
 catalogue==2.0.8
-certifi==2023.5.7
+certifi==2023.7.22
 cffi==1.15.1
 charset-normalizer==3.1.0
 click==8.1.3