diff --git a/pyproject.toml b/pyproject.toml
index 82683189..ac0fb1af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
     "cachetools>=4.1,<5",
     "debts>=0.5,<1",
     "email_validator>=1.0,<3",
-    "Flask>=2,<3",
+    "Flask>=2,<4",
     "Flask-Babel>=1.0,<4",
     "Flask-Cors>=3.0.8,<4",
     "Flask-Limiter>=2.6,<3",