diff --git a/pyproject.toml b/pyproject.toml
index c8dbe4f9..31eeceab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ include = ["CHANGELOG.md", "rootly_sdk/py.typed"]
 [tool.poetry.dependencies]
 python = "^3.10"
 httpx = ">=0.23.0,<0.29.0"
-attrs = ">=22.2.0"
+attrs = ">=26.1.0"
 python-dateutil = "^2.8.0"
 
 [build-system]