diff --git a/setup.py b/setup.py
index 4904edd..0312845 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@
         "ctransformers>=0.2.25,<0.3.0",
         "deepmerge>=1.1.0,<2.0.0",
         "InstructorEmbedding>=1.0.1,<2.0.0",
-        "langchain>=0.0.181",
+        "langchain>=0.0.181,<0.0.293",
         "pydantic>=1.9,<2.0",
         "pyyaml>=6.0",
         "quart>=0.18.3,<0.19.0",