diff --git a/pyproject.toml b/pyproject.toml
index a956703..3545546 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
     "uvicorn[standard]>=0.30.0,<1.0",
     "bitcoinlib-rpc>=0.1.0",
     "pydantic-settings>=2.0,<3.0",
-    "cachetools>=5.3,<6.0",
+    "cachetools>=5.3,<8.0",
     "requests>=2.28.0,<3.0",
     "prometheus-client>=0.20.0,<1.0",
 ]