diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index e010c1eb09d..d37aedd6f51 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -261,10 +261,10 @@ in {
   };
 
   ruby_2_7 = generic {
-    version = rubyVersion "2" "7" "3" "";
+    version = rubyVersion "2" "7" "4" "";
     sha256 = {
-      src = "0f2kwn98n9h9hy1fd547s7d0a7ga8jjm4nh294bwiwnq65gaj9c9";
-      git = "0vxg9w4dgpw2ig5snxmkahvzdp2yh71w8qm49g35d5hqdsql7yrx";
+      src = "0nxwkxh7snmjqf787qsp4i33mxd1rbf9yzyfiky5k230i680jhrh";
+      git = "1prsrqwkla4k5japlm54k0j700j4824rg8z8kpswr9r3swrmrf5p";
     };
   };
 
diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index 0575cb626b6..7128c88dee1 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -6,7 +6,7 @@
     "${patchSet}/patches/ruby/2.6/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.6/head/railsexpress/03-more-detailed-stacktrace.patch"
   ];
-  "2.7.3" = ops useRailsExpress [
+  "2.7.4" = ops useRailsExpress [
     "${patchSet}/patches/ruby/2.7/head/railsexpress/01-fix-broken-tests-caused-by-ad.patch"
     "${patchSet}/patches/ruby/2.7/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.7/head/railsexpress/03-more-detailed-stacktrace.patch"