diff --git a/manageiq-ui-classic.gemspec b/manageiq-ui-classic.gemspec
index 632d42b4f859..f5a4a28807f8 100644
--- a/manageiq-ui-classic.gemspec
+++ b/manageiq-ui-classic.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.add_dependency "coffee-rails"
   s.add_dependency "font-fabulous", "~> 1.0.5"
   s.add_dependency "high_voltage", "~> 3.0.0"
-  s.add_dependency "more_core_extensions", "~>3.2"
+  s.add_dependency "more_core_extensions", "~>4.0"
   s.add_dependency "novnc-rails", "~>0.2"
   s.add_dependency "patternfly-sass", "~> 3.59.1"
   s.add_dependency "sass-rails"