diff --git a/pyproject.toml b/pyproject.toml
index 5e0ee55..e8b96c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "alembic>=1.14.0",
     "pydantic>=2.0.0",
     "pydantic-settings>=2.0.0",
-    "bcrypt>=4.0.0",
+    "bcrypt>=5.0.0",
     "httpx>=0.27.0",
     "pyjwt[crypto]>=2.8.0",
     "mcp>=1.0.0",