diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3eadd3b385a..04f49f43ab4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9373,6 +9373,7 @@ in
   rubyPackages_2_4 = recurseIntoAttrs ruby_2_4.gems;
   rubyPackages_2_5 = recurseIntoAttrs ruby_2_5.gems;
   rubyPackages_2_6 = recurseIntoAttrs ruby_2_6.gems;
+  rubyPackages_2_7 = recurseIntoAttrs ruby_2_7.gems;
 
   mruby = callPackage ../development/compilers/mruby { };