diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index 89d394c8756..5d3a1b571bf 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -207,10 +207,10 @@ in {
   };
 
   ruby_2_4 = generic {
-    version = rubyVersion "2" "4" "4" "";
+    version = rubyVersion "2" "4" "9" "";
     sha256 = {
-      src = "0nmfr2lijik6cykk0zbj11zcapcrvmdvq83k3r6q3k74g4d1qkr5";
-      git = "103cs7hz1v0h84lbrippl87s4lawi20m406rs5dgxl2gr2wyjpy5";
+      src = "1bn6n5b920qy3lsx99jr8495jkc3sg89swgb96d5fgd579g6p6zr";
+      git = "066kb1iki7mx7qkm10xhj5b6v8s47wg68v43l3nc36y2hyim1w2c";
     };
   };
 
diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index e53f231884d..3a71767f4e1 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -11,7 +11,7 @@ rec {
     "${patchSet}/patches/ruby/2.3/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.3/head/railsexpress/03-display-more-detailed-stack-trace.patch"
   ];
-  "2.4.4" = ops useRailsExpress [
+  "2.4.9" = ops useRailsExpress [
     "${patchSet}/patches/ruby/2.4/head/railsexpress/01-skip-broken-tests.patch"
     "${patchSet}/patches/ruby/2.4/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.4/head/railsexpress/03-display-more-detailed-stack-trace.patch"