diff --git a/applications/workshop-booking/requirements-dev.txt b/applications/workshop-booking/requirements-dev.txt
index d6267209..7755319b 100644
--- a/applications/workshop-booking/requirements-dev.txt
+++ b/applications/workshop-booking/requirements-dev.txt
@@ -6,7 +6,7 @@ pytest==9.1.1
 ruff==0.16.8
 
 # Transitive development dependencies.
-certifi==2026.7.22
+certifi==2026.10.19
 httpcore==1.0.9
 iniconfig==2.3.0
 packaging==26.3