diff --git a/pyproject.toml b/pyproject.toml
index 00e1d60..4fe421f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ select = ["E", "F", "W", "I", "UP"]
 dev = [
     "pytest-homeassistant-custom-component>=0.13",
     "ruff>=0.15",
-    "langchain-core>=0.3,<1",
+    "langchain-core>=0.3,<2",
     "langchain-gigachat>=0.3.0",
     "langchain-openai>=0.3.0,<1",
     "langchain-community>=0.3.0,<0.4",