diff --git a/requirements/base.txt b/requirements/base.txt
index e1af29d..962b3af 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file=base.txt base.in
 #
-certifi==2018.8.24
+certifi==2022.12.7
     # via requests
 charset-normalizer==2.0.7
     # via requests
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 3b9336a..16667e8 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -30,7 +30,7 @@ bandit==1.6.2
     # via -r test.txt
 bleach==3.3.0
     # via readme-renderer
-certifi==2018.8.24
+certifi==2022.12.7
     # via
     #   -r test.txt
     #   requests
diff --git a/requirements/test.txt b/requirements/test.txt
index 9c4d8e6..72d4418 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -16,7 +16,7 @@ babel==2.9.1
     # via sphinx
 bandit==1.6.2
     # via -r test.in
-certifi==2018.8.24
+certifi==2022.12.7
     # via
     #   -r base.txt
     #   requests