diff --git a/python_requirements.txt b/python_requirements.txt
index 61e919d24b..a9e0fd469b 100644
--- a/python_requirements.txt
+++ b/python_requirements.txt
@@ -60,7 +60,7 @@ blinker==1.9.0
     #   flask
 bokeh==3.8.2
     # via -r requirements.in
-certifi==2025.8.3
+certifi==2026.10.19
     # via
     #   -r requirements.in
     #   httpcore
diff --git a/python_requirements_bundled.txt b/python_requirements_bundled.txt
index 1c3d6695a9..087d0fee18 100644
--- a/python_requirements_bundled.txt
+++ b/python_requirements_bundled.txt
@@ -20,7 +20,7 @@ attrs==25.3.0
 babel==2.17.0
 beautifulsoup4==4.13.5
 bokeh==3.8.2
-certifi==2025.8.3
+certifi==2026.10.19
 cffi==2.0.0
 charset-normalizer==3.4.3
 click==8.2.1