diff --git a/poetry.lock b/poetry.lock
index b30c7ff1..f2bb3770 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1274,4 +1274,4 @@ ws = ["websockets"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8"
-content-hash = "24c73f352815a40a121eb14a93183b1b257d33ea4cfc92908eaa303d62d36d92"
+content-hash = "5cda6a52481cb05274ed06efec69ffe66392bd08dbea32f3fe22d28609484af8"
diff --git a/pyproject.toml b/pyproject.toml
index 9ad181da..709c9a2a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@ readme = "README.md"
 # See https://github.com/MousaZeidBaker/poetry-plugin-up
 [tool.poetry.dependencies]
 python = ">=3.8"
+cattrs = ">=23.1.2"
 lsprotocol = "2023.0.0"
 websockets = { version = ">=11.0.3", optional = true }