diff --git a/docs/requirements.txt b/docs/requirements.txt
index 59ee71f..1b4a952 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -3,7 +3,7 @@ alabaster==1.0.0
 babel==2.18.0
 beartype==0.22.9
 beautifulsoup4==4.14.3
-certifi==2026.5.20
+certifi==2026.6.17
 charset-normalizer==3.4.7
 docutils==0.22.4
 furo==2025.12.19