diff --git a/pyproject.toml b/pyproject.toml
index 6e842bc..8961f02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ dependencies = [
     "anyio==4.14.0",
     "argon2-cffi==25.1.0",
     "argon2-cffi-bindings==25.1.0",
-    "certifi==2026.5.20",
+    "certifi==2026.6.17",
     "cffi==2.0.0",
     "charset-normalizer==3.4.7",
     "click==8.4.1",