diff --git a/lib/maintainers.nix b/lib/maintainers.nix
index b7b5232c170..a18e8a24b12 100644
--- a/lib/maintainers.nix
+++ b/lib/maintainers.nix
@@ -640,6 +640,7 @@
   sternenseemann = "Lukas Epple <post@lukasepple.de>";
   stesie = "Stefan Siegl <stesie@brokenpipe.de>";
   steveej = "Stefan Junker <mail@stefanjunker.de>";
+  StillerHarpo = "Florian Engel <florianengel39@gmail.com>";
   stumoss = "Stuart Moss <samoss@gmail.com>";
   SuprDewd = "Bjarki Ágúst Guðmundsson <suprdewd@gmail.com>";
   swarren83 = "Shawn Warren <shawn.w.warren@gmail.com>";
diff --git a/pkgs/tools/misc/lolcat/Gemfile.lock b/pkgs/tools/misc/lolcat/Gemfile.lock
index 4b318ea1473..a97f1eb9c87 100644
--- a/pkgs/tools/misc/lolcat/Gemfile.lock
+++ b/pkgs/tools/misc/lolcat/Gemfile.lock
@@ -1,14 +1,17 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    lolcat (42.1.0)
-      paint (~> 0.8.3)
-      trollop (~> 1.16.2)
-    paint (0.8.7)
-    trollop (1.16.2)
+    lolcat (90.8.8)
+      paint (~> 2.0.0)
+      trollop (~> 2.1.2)
+    paint (2.0.1)
+    trollop (2.1.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   lolcat
+
+BUNDLED WITH
+   1.14.6
diff --git a/pkgs/tools/misc/lolcat/default.nix b/pkgs/tools/misc/lolcat/default.nix
index 21377d7bfa4..827484e885f 100644
--- a/pkgs/tools/misc/lolcat/default.nix
+++ b/pkgs/tools/misc/lolcat/default.nix
@@ -1,16 +1,19 @@
-{ stdenv, lib, bundlerEnv, gpgme, ruby, ncurses, writeText, zlib, xapian
-, pkgconfig, which }:
+{ lib, bundlerEnv, ruby }:
+
+bundlerEnv rec {
+  name = "${pname}-${version}";
+  pname = "lolcat";
+  version = (import ./gemset.nix).lolcat.version;
 
-bundlerEnv {
   inherit ruby;
 
-  pname = "lolcat";
+  # expects Gemfile, Gemfile.lock and gemset.nix in the same directory
   gemdir = ./.;
 
   meta = with lib; {
     description = "A rainbow version of cat";
     homepage    = https://github.com/busyloop/lolcat;
-    license     = licenses.wtfpl;
-    maintainers = with maintainers; [ pSub ];
+    license     = licenses.bsd3;
+    maintainers = with maintainers; [ StillerHarpo ];
   };
 }
diff --git a/pkgs/tools/misc/lolcat/gemset.nix b/pkgs/tools/misc/lolcat/gemset.nix
index 85acf7767a8..6d0962780f4 100644
--- a/pkgs/tools/misc/lolcat/gemset.nix
+++ b/pkgs/tools/misc/lolcat/gemset.nix
@@ -1,27 +1,27 @@
 {
-  "lolcat" = {
-    version = "42.1.0";
+  lolcat = {
+    dependencies = ["paint" "trollop"];
     source = {
+      remotes = ["http://rubygems.org"];
+      sha256 = "1q031wq8wvp09llb39w0ql5k1zkblvkbmhlvrkc3ym832pibk06f";
       type = "gem";
-      sha256 = "1jp0g7k958dg709dm1qs7nr8dmi4vlgvmcvqcr1zhk8ygx89rwgc";
     };
-    dependencies = [
-      "paint"
-      "trollop"
-    ];
+    version = "90.8.8";
   };
-  "paint" = {
-    version = "0.8.7";
+  paint = {
     source = {
+      remotes = ["http://rubygems.org"];
+      sha256 = "1gnh9cihc84w4xbw51pg15crjvhblbq6nkzljrp7kmn3434nsg0d";
       type = "gem";
-      sha256 = "0nl1x0190d44bfczlxdy16gxsvm95y14kxv3k9n92h9ap2zvdyd8";
     };
+    version = "2.0.1";
   };
-  "trollop" = {
-    version = "1.16.2";
+  trollop = {
     source = {
+      remotes = ["http://rubygems.org"];
+      sha256 = "0415y63df86sqj43c0l82and65ia5h64if7n0znkbrmi6y0jwhl8";
       type = "gem";
-      sha256 = "0frrp90dw266h3kf9g925dppir9l7p8jxknw6dn5nz6fa6c4g5lg";
     };
+    version = "2.1.2";
   };
 }
\ No newline at end of file