diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index ce99311e45f7..6a141bc0c292 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -296,8 +296,8 @@ in {
   mkRuby = generic;
 
   ruby_3_1 = generic {
-    version = rubyVersion "3" "1" "4" "";
-    hash = "sha256-o9VYeaDfqx1xQf3xDSKgfb+OXNxEFdob3gYSfVzDx7Y=";
+    version = rubyVersion "3" "1" "5" "";
+    hash = "sha256-NoXFHu7hNSwx6gOXBtcZdvU9AKttdzEt5qoauvXNosU=";
   };
 
   ruby_3_2 = generic {