diff --git a/pkgs/servers/home-assistant/default.nix b/pkgs/servers/home-assistant/default.nix
index b2c1c1c8aab9..5ec7155d185a 100644
--- a/pkgs/servers/home-assistant/default.nix
+++ b/pkgs/servers/home-assistant/default.nix
@@ -36,7 +36,7 @@ let
         src = fetchFromGitHub {
           owner = "flz";
           repo = "iaqualink-py";
-          rev = version;
+          rev = "v${version}";
           sha256 = "16mn6nd9x3hm6j6da99qhwbqs95hh8wx21r1h1m9csl76z77n9lh";
         };
         checkInputs = oldAttrs.checkInputs ++ [ python3.pkgs.asynctest ];