diff --git a/pyproject.toml b/pyproject.toml
index 97765f0..2fa6eed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ types-redis = ">=3.5.9,<5.0.0"
 python-ulid = "^1.0.3"
 typing-extensions = "^4.4.0"
 hiredis = "^2.0.0"
-more-itertools = "^8.14.0"
+more-itertools = ">=8.14,<10.0"
 
 [tool.poetry.dev-dependencies]
 mypy = "^0.982"