diff --git a/pkgs/os-specific/linux/ply/default.nix b/pkgs/os-specific/linux/ply/default.nix
index e62716e47967..916aa39eee22 100644
--- a/pkgs/os-specific/linux/ply/default.nix
+++ b/pkgs/os-specific/linux/ply/default.nix
@@ -1,19 +1,16 @@
 { lib, stdenv, kernel, fetchFromGitHub, autoreconfHook, bison, flex, p7zip, rsync }:
 
-assert kernel != null -> lib.versionAtLeast kernel.version "4.0";
-
-let
-  version = "1.0.beta1-9e810b1";
-in stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "ply";
-  inherit version;
+  version = "2.1.1-${lib.substring 0 7 src.rev}";
+
   nativeBuildInputs = [ autoreconfHook flex bison p7zip rsync ];
 
   src = fetchFromGitHub {
     owner = "iovisor";
     repo = "ply";
-    rev = "9e810b157ba079c32c430a7d4c6034826982056e";
-    sha256 = "15cp6iczawaqlhsa0af6i37zn5iq53kh6ya8s2hzd018yd7mhg50";
+    rev = "e25c9134b856cc7ffe9f562ff95caf9487d16b59";
+    sha256 = "1178z7vvnjwnlxc98g2962v16878dy7bd0b2njsgn4vqgrnia7i5";
   };
 
   preAutoreconf = ''
@@ -34,9 +31,10 @@ in stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    description = "dynamic Tracing in Linux";
+    description = "Dynamic tracing in Linux";
     homepage = "https://wkz.github.io/ply/";
-    license = [ licenses.gpl2 ];
+    license = [ licenses.gpl2Only ];
     maintainers = with maintainers; [ mic92 mbbx6spp ];
+    broken = lib.versionOlder kernel.version "4.0";
   };
 }