diff --git a/pkgs/development/interpreters/ruby/rubygems/default.nix b/pkgs/development/interpreters/ruby/rubygems/default.nix
index b9548284355..1042caa41ac 100644
--- a/pkgs/development/interpreters/ruby/rubygems/default.nix
+++ b/pkgs/development/interpreters/ruby/rubygems/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "rubygems";
-  version = "3.0.3";
+  version = "3.0.6";
 
   src = fetchurl {
     url = "https://rubygems.org/rubygems/rubygems-${version}.tgz";
-    sha256 = "0b6b9ads8522804xv8b8498gqwsv4qawv13f81kyc7g966y7lfmy";
+    sha256 = "1ca1i4xmggizr59m6p28gprlvshczsbx30q8iyzxb2vj4jn8arzx";
   };
 
   patches = [