diff --git a/libs/langchain-mongodb/pyproject.toml b/libs/langchain-mongodb/pyproject.toml
index 07ac4982..5162e0af 100644
--- a/libs/langchain-mongodb/pyproject.toml
+++ b/libs/langchain-mongodb/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
 dev = [
     "freezegun>=1.2.2",
     "langchain>=0.3.14,<1.0",
-    "langchain-core>=0.3.29,<1.0",
+    "langchain-core>=0.3.29,<2.0",
     "langchain-text-splitters>=0.3.5,<1.0",
     "pytest-mock>=3.10.0",
     "pytest>=7.3.0",