diff --git a/pyproject.toml b/pyproject.toml
index 9957707..24a3951 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ dependencies = [
     "chainlit ~= 2.9.3",
     "lancedb",
     "langchain_aws",
-    "langchain_core >= 1.0.0",
+    "langchain_core >= 1.2.5",
     "langchain_ollama",
     "langchain_text_splitters",
     "langfuse",