diff --git a/pyproject.toml b/pyproject.toml
index aea3b888..8268e112 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,6 +5,7 @@ description = "Add your description here"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
+    "langchain-core>=0.3.81",
     "backtrader>=1.9.78.123",
     "chainlit>=2.5.5",
     "langchain-anthropic>=0.3.15",
diff --git a/setup.py b/setup.py
index 793df3e6..96725ea7 100644
--- a/setup.py
+++ b/setup.py
@@ -13,6 +13,7 @@ setup(
     url="https://github.com/TauricResearch",
     packages=find_packages(),
     install_requires=[
+        "langchain-core>=0.3.81",
         "langchain>=0.1.0",
         "langchain-openai>=0.0.2",
         "langchain-experimental>=0.0.40",