diff --git a/pkgs/development/python-modules/cohere/default.nix b/pkgs/development/python-modules/cohere/default.nix
index bcc2fb709123..484a4ab0a434 100644
--- a/pkgs/development/python-modules/cohere/default.nix
+++ b/pkgs/development/python-modules/cohere/default.nix
@@ -44,6 +44,8 @@ buildPythonPackage rec {
     typing-extensions
   ];
 
+  pythonRelaxDeps = [ "httpx-sse" ];
+
   # tests require CO_API_KEY
   doCheck = false;