diff --git a/pkgs/development/python-modules/pysml/default.nix b/pkgs/development/python-modules/pysml/default.nix
index 67dae25bdd02..0f16f4503d19 100644
--- a/pkgs/development/python-modules/pysml/default.nix
+++ b/pkgs/development/python-modules/pysml/default.nix
@@ -1,4 +1,5 @@
 { lib
+, aiohttp
 , async-timeout
 , bitstring
 , buildPythonPackage
@@ -27,6 +28,7 @@ buildPythonPackage rec {
   ];
 
   propagatedBuildInputs = [
+    aiohttp
     async-timeout
     bitstring
     pyserial-asyncio