diff --git a/requirements.txt b/requirements.txt
index 399dd925d..aaa51973e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,9 +32,9 @@ attrs==26.1.0 \
     #   jsonschema
     #   referencing
     #   typedunits
-certifi==2026.4.22 \
-    --hash=sha256:3cb2210c8f88ba2318d29b0388d1023c8492ff72ecdde4ebdaddbb13a31b1c4a \
-    --hash=sha256:8d455352a37b71bf76a79caa83a3d6c25afee4a385d632127b6afb3963f1c580
+certifi==2026.10.19 \
+    --hash=sha256:035c1e85572b141bf1c3a3eff0e33a8eb74917522f2559075ff8d2fea780a1ae \
+    --hash=sha256:42d35340cc5b9ba78e818ddbff0c5b1c2b779de448a340fd1b989f5fa8670e1b
     # via requests
 cffi==2.0.0 \
     --hash=sha256:00bdf7acc5f795150faa6957054fbbca2439db2f775ce831222b66f192f03beb \