diff --git a/deconst-requirements.txt b/deconst-requirements.txt
index ce42055..89cd6a8 100644
--- a/deconst-requirements.txt
+++ b/deconst-requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.9
 Babel==2.3.4
 backports-abc==0.4
 backports.ssl-match-hostname==3.5.0.1
-certifi==2016.2.28
+certifi==2023.7.22
 chardet==2.3.0
 chios==0.1.4
 click==6.6
diff --git a/style-guide/deconst-requirements.txt b/style-guide/deconst-requirements.txt
index 5a40e70..cf1759a 100644
--- a/style-guide/deconst-requirements.txt
+++ b/style-guide/deconst-requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.9
 Babel==2.3.4
 backports-abc==0.4
 backports.ssl-match-hostname==3.5.0.1
-certifi==2016.2.28
+certifi==2023.7.22
 chardet==2.3.0
 chios==0.1.4
 click==6.6