diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index 49b268e97acc..e96e44365e04 100644
--- a/pkgs/development/python-modules/langchain/default.nix
+++ b/pkgs/development/python-modules/langchain/default.nix
@@ -58,6 +58,8 @@ buildPythonPackage rec {
 
   buildInputs = [ bash ];
 
+  pythonRelaxDeps = [ "tenacity" ];
+
   dependencies = [
     aiohttp
     langchain-core