diff --git a/requirements.txt b/requirements.txt
index c406985..42bd8ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@
 # - pychoir
 #
 
-certifi==2026.7.22
+certifi==2026.10.19
     # via requests
 charset-normalizer==3.5.2
     # via requests
diff --git a/requirements/requirements-dev.txt b/requirements/requirements-dev.txt
index bee4495..b9dc18d 100644
--- a/requirements/requirements-dev.txt
+++ b/requirements/requirements-dev.txt
@@ -19,7 +19,7 @@
 # - pychoir
 #
 
-certifi==2026.7.22
+certifi==2026.10.19
     # via requests
 cfgv==3.5.0
     # via pre-commit