diff --git a/pkgs/tools/virtualization/cloud-init/default.nix b/pkgs/tools/virtualization/cloud-init/default.nix
index 9da4290dadde..a2e156f2a10b 100644
--- a/pkgs/tools/virtualization/cloud-init/default.nix
+++ b/pkgs/tools/virtualization/cloud-init/default.nix
@@ -51,6 +51,7 @@ python3.pkgs.buildPythonApplication rec {
     jsonschema
     netifaces
     oauthlib
+    pyserial
     pyyaml
     requests
   ];