diff --git a/pkgs/development/tools/build-managers/rake/Gemfile.lock b/pkgs/development/tools/build-managers/rake/Gemfile.lock
index cbea90ab1a9..c7f89c32c3f 100644
--- a/pkgs/development/tools/build-managers/rake/Gemfile.lock
+++ b/pkgs/development/tools/build-managers/rake/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rake (11.1.1)
+    rake (12.0.0)
 
 PLATFORMS
   ruby
@@ -10,4 +10,4 @@ DEPENDENCIES
   rake
 
 BUNDLED WITH
-   1.10.5
+   1.14.6
diff --git a/pkgs/development/tools/build-managers/rake/default.nix b/pkgs/development/tools/build-managers/rake/default.nix
index db7c987465a..f23edfd5f63 100644
--- a/pkgs/development/tools/build-managers/rake/default.nix
+++ b/pkgs/development/tools/build-managers/rake/default.nix
@@ -1,7 +1,7 @@
 { lib, bundlerEnv, ruby }:
 
 bundlerEnv {
-  name = "rake-11.1.1";
+  name = "rake-${(import ./gemset.nix).rake.version}";
 
   inherit ruby;
   gemdir = ./.;
diff --git a/pkgs/development/tools/build-managers/rake/gemset.nix b/pkgs/development/tools/build-managers/rake/gemset.nix
index efea7a79dbb..d5dc29e378a 100644
--- a/pkgs/development/tools/build-managers/rake/gemset.nix
+++ b/pkgs/development/tools/build-managers/rake/gemset.nix
@@ -1,9 +1,10 @@
 {
-  "rake" = {
-    version = "11.1.1";
+  rake = {
     source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "01j8fc9bqjnrsxbppncai05h43315vmz9fwg28qdsgcjw9ck1d7n";
       type = "gem";
-      sha256 = "0h8wcic2xh3lv7yvs05pqnfqb80jyl488f7136lgxmajb0s1rqhg";
     };
+    version = "12.0.0";
   };
 }
\ No newline at end of file