diff --git a/pkgs/servers/http/unit/default.nix b/pkgs/servers/http/unit/default.nix
index 8711be4b5c0..71ccbb2c15a 100644
--- a/pkgs/servers/http/unit/default.nix
+++ b/pkgs/servers/http/unit/default.nix
@@ -9,6 +9,7 @@
 , withRuby_2_4 ? false, ruby_2_4
 , withRuby_2_5 ? false, ruby_2_5
 , withRuby_2_6 ? true, ruby_2_6
+, withRuby_2_7 ? true, ruby_2_7
 , withSSL ? true, openssl ? null
 , withIPv6 ? true
 , withDebug ? false
@@ -40,6 +41,7 @@ stdenv.mkDerivation rec {
     ++ optional withRuby_2_4 ruby_2_4
     ++ optional withRuby_2_5 ruby_2_5
     ++ optional withRuby_2_6 ruby_2_6
+    ++ optional withRuby_2_7 ruby_2_7
     ++ optional withSSL openssl;
 
   configureFlags = [
@@ -62,6 +64,7 @@ stdenv.mkDerivation rec {
     ${optionalString withRuby_2_4   "./configure ruby   --module=ruby24   --ruby=${ruby_2_4}/bin/ruby"}
     ${optionalString withRuby_2_5   "./configure ruby   --module=ruby25   --ruby=${ruby_2_5}/bin/ruby"}
     ${optionalString withRuby_2_6   "./configure ruby   --module=ruby26   --ruby=${ruby_2_6}/bin/ruby"}
+    ${optionalString withRuby_2_7   "./configure ruby   --module=ruby27   --ruby=${ruby_2_7}/bin/ruby"}
   '';
 
   meta = {