diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index de8ccebb6bcc..1a55784c86ef 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -262,8 +262,8 @@ in {
   };
 
   ruby_3_0 = generic {
-    version = rubyVersion "3" "0" "3" "";
-    sha256 = "1b4j39zyyvdkf1ax2c6qfa40b4mxfkr87zghhw19fmnzn8f8d1im";
+    version = rubyVersion "3" "0" "4" "";
+    sha256 = "0avj4g3s2839b2y4m6pk8kid74r8nj7k0qm2rsdcwjzhg8h7rd3h";
   };
 
   ruby_3_1 = generic {
diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index 395c12db8048..203eca46fe89 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -6,7 +6,7 @@
     "${patchSet}/patches/ruby/2.7/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.7/head/railsexpress/03-more-detailed-stacktrace.patch"
   ];
-  "3.0.3" = ops useRailsExpress [
+  "3.0.4" = ops useRailsExpress [
     "${patchSet}/patches/ruby/3.0/head/railsexpress/01-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/3.0/head/railsexpress/02-malloc-trim.patch"
   ];