diff --git a/pkgs/development/python-modules/busylight-for-humans/default.nix b/pkgs/development/python-modules/busylight-for-humans/default.nix
index 6b04f233054b..8cbd44469a6d 100644
--- a/pkgs/development/python-modules/busylight-for-humans/default.nix
+++ b/pkgs/development/python-modules/busylight-for-humans/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "busylight-for-humans";
-  version = "0.33.3";
+  version = "0.35.2";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "JnyJny";
     repo = "busylight";
-    tag = version;
+    tag = "v${version}";
     hash = "sha256-0jmaVMN4wwqoO5wGMaV4kJefNUPOuJpWbsqHcZZ0Nh4=";
   };