diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index 0be983e79e2..71fca783b07 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -212,6 +212,17 @@ in {
     };
   };
 
+  ruby_2_1_7 = generic {
+    majorVersion = "2";
+    minorVersion = "1";
+    teenyVersion = "7";
+    patchLevel = "0";
+    sha256 = {
+      src = "10fxlqmpbq9407zgsx060q22yj4zq6c3czbf29h7xk1rmjb1b77m";
+      git = "c5ecad94558547b6a50cf64d379829fecd62f3ca175626827f435237a3c6be5c";
+    };
+  };
+
   ruby_2_2_0 = generic {
     majorVersion = "2";
     minorVersion = "2";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c4b93235f2b..d77de864d4f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5240,14 +5240,14 @@ let
   inherit (callPackage ../development/interpreters/ruby {})
     ruby_1_9_3
     ruby_2_0_0
-    ruby_2_1_0 ruby_2_1_1 ruby_2_1_2 ruby_2_1_3 ruby_2_1_6
+    ruby_2_1_0 ruby_2_1_1 ruby_2_1_2 ruby_2_1_3 ruby_2_1_6 ruby_2_1_7
     ruby_2_2_0 ruby_2_2_2;
 
   # Ruby aliases
   ruby = ruby_2_2;
   ruby_1_9 = ruby_1_9_3;
   ruby_2_0 = ruby_2_0_0;
-  ruby_2_1 = ruby_2_1_6;
+  ruby_2_1 = ruby_2_1_7;
   ruby_2_2 = ruby_2_2_2;
 
   rubygemsFun = ruby: builderDefsPackage (callPackage ../development/interpreters/ruby/rubygems.nix) {