diff --git a/2019/5-jupyter-azure-cognitive-services-face/requirements.txt b/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
index 86b682f..d4163b0 100644
--- a/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
+++ b/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
@@ -5,7 +5,7 @@ attrs==19.1.0
 backcall==0.1.0
 black==19.3b0
 bleach==3.1.4
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 cycler==0.10.0
diff --git a/2019/requirements.txt b/2019/requirements.txt
index 7bc9dd6..dfce646 100644
--- a/2019/requirements.txt
+++ b/2019/requirements.txt
@@ -3,7 +3,7 @@ asn1crypto==0.24.0
 astroid==2.2.5
 azure-common==1.1.18
 azure-servicebus==0.50.0
-certifi==2019.3.9
+certifi==2022.12.7
 cffi==1.12.2
 chardet==3.0.4
 Click==7.0