diff --git a/pkgs/development/libraries/libevdevplus/default.nix b/pkgs/development/libraries/libevdevplus/default.nix
index f538aab64ad..0f2b3e05266 100644
--- a/pkgs/development/libraries/libevdevplus/default.nix
+++ b/pkgs/development/libraries/libevdevplus/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation rec {
   pname = "libevdevplus";
-  version = "2019-10-01";
+  version = "unstable-2019-10-01";
 
   src  = fetchFromGitHub {
     owner  = "YukiWorkshop";