diff --git a/requirements-source.in b/requirements-source.in
index 0e0484b..ba0a19e 100644
--- a/requirements-source.in
+++ b/requirements-source.in
@@ -1,5 +1,5 @@
 build==1.5.0
-certifi==2026.5.20
+certifi==2026.6.17
 charset-normalizer==3.4.7
 filelock==3.29.4
 idna==3.18