diff --git a/pyproject.toml b/pyproject.toml
index 6a388f9afbf..ebb33568ac4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ dependencies = [
     "flask-session>=0.4.0, <1.0",
     "flask-wtf>=1.1.0, <2.0",
     "geopy",
-    "greenlet>=3.0.3, <=3.1.1",
+    "greenlet>=3.0.3, <=3.5.0",
     "gunicorn>=22.0.0; sys_platform != 'win32'",
     "hashids>=1.3.1, <2",
     # holidays>=0.45 required for security fix