diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index edf8ec693317..0df7ec0a7959 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -216,10 +216,10 @@ in {
   };
 
   ruby_2_5 = generic {
-    version = rubyVersion "2" "5" "0" "";
+    version = rubyVersion "2" "5" "1" "";
     sha256 = {
-      src = "1azj0d2lzziw6iml7bx3sxpxzcdmfwfq3yhm7djyp20q1xiz7rj6";
-      git = "0d436nqmp3ykdkp4sck5bb8sf3qvx30x1p58xh8axv66mvsyc2jd";
+      src = "1c99k0fjaq7k09104h1b1cqx6mrk2b14ic1jjnxc6yav68i1ij6s";
+      git = "1j0fd16aq9x98n0kq9c3kfp2sh6xcsq8q4733p0wfqjh3vz50kyj";
     };
   };
 }
diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index e52091fd0687..e53f231884d9 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -16,7 +16,7 @@ rec {
     "${patchSet}/patches/ruby/2.4/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.4/head/railsexpress/03-display-more-detailed-stack-trace.patch"
   ];
-  "2.5.0" = ops useRailsExpress [
+  "2.5.1" = ops useRailsExpress [
     "${patchSet}/patches/ruby/2.5/head/railsexpress/01-fix-broken-tests-caused-by-ad.patch"
     "${patchSet}/patches/ruby/2.5/head/railsexpress/02-improve-gc-stats.patch"
     "${patchSet}/patches/ruby/2.5/head/railsexpress/03-more-detailed-stacktrace.patch"