diff --git a/pyproject.toml b/pyproject.toml
index b63f48a3..30030be9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "qdrant-client>=1.13",
     "fastembed>=0.3",
     "langgraph>=0.3",
-    "langchain-core>=0.3",
+    "langchain-core>=1.2.28",
     "openai>=1.60",
     "cohere>=5.13",
     "tiktoken>=0.9",