diff --git a/pyproject.toml b/pyproject.toml
index 0b8651e..0c5b7bf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ python = ">=3.10,<4"
 transitions = ">=0.7,<0.10"
 Pint = ">=0.15,<0.25"
 "ruamel.yaml" = {version = ">=0.16.5,<0.19.0", optional = true}
-pygls = {version = "^1.0.0", optional = true}
+pygls = {version = ">=1,<3", optional = true}
 Jinja2 = ">=2.11.3,<4.0.0"
 pydantic = ">=2,<3.0"
 click = ">=7.1.2,<9"