diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index 004c25e79d06..57217b0550ce 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -190,27 +190,13 @@ let
           # make: *** [uncommon.mk:373: do-install-all] Error 1
           enableParallelInstalling = false;
 
-          patches =
-            op useBaseRuby ./do-not-update-gems-baseruby-3.2.patch
-            ++ [
-              # When using a baseruby, ruby always sets "libdir" to the build
-              # directory, which nix rejects due to a reference in to /build/ in
-              # the final product. Removing this reference doesn't seem to break
-              # anything and fixes cross compilation.
-              ./dont-refer-to-build-dir.patch
-            ]
-            ++ ops (lib.versionAtLeast ver.majMin "3.4" && lib.versionOlder ver.majMin "3.5") [
-              (fetchpatch {
-                name = "ruby-3.4-fix-gcc-15-llvm-21-1.patch";
-                url = "https://github.com/ruby/ruby/commit/846bb760756a3bf1ab12d56d8909e104f16e6940.patch";
-                hash = "sha256-+f0mzHsGAe9FT9NWE345BxzaB6vmWzMTvEfWF84uFOs=";
-              })
-              (fetchpatch {
-                name = "ruby-3.4-fix-gcc-15-llvm-21-2.patch";
-                url = "https://github.com/ruby/ruby/commit/18e176659e8afe402cab7d39972f2d56f2cf378f.patch";
-                hash = "sha256-TKPG1hcC1G2WmUkvNV6QSnvUpTEDqrYKrIk/4fAS8QE=";
-              })
-            ];
+          patches = op useBaseRuby ./do-not-update-gems-baseruby-3.2.patch ++ [
+            # When using a baseruby, ruby always sets "libdir" to the build
+            # directory, which nix rejects due to a reference in to /build/ in
+            # the final product. Removing this reference doesn't seem to break
+            # anything and fixes cross compilation.
+            ./dont-refer-to-build-dir.patch
+          ];
 
           cargoRoot = opString yjitSupport "yjit";
 
@@ -421,8 +407,8 @@ in
   };
 
   ruby_3_4 = generic {
-    version = rubyVersion "3" "4" "7" "";
-    hash = "sha256-I4FabQlWlveRkJD9w+L5RZssg9VyJLLkRs4fX3Mz7zY=";
+    version = rubyVersion "3" "4" "8" "";
+    hash = "sha256-U8TdrUH7thifH17g21elHVS9H4f4dVs9aGBBVqNbBFs=";
     cargoHash = "sha256-5Tp8Kth0yO89/LIcU8K01z6DdZRr8MAA0DPKqDEjIt0=";
   };