diff --git a/manageiq-providers-kubernetes.gemspec b/manageiq-providers-kubernetes.gemspec
index 9c92d77c3a..c75b667201 100644
--- a/manageiq-providers-kubernetes.gemspec
+++ b/manageiq-providers-kubernetes.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency("kubeclient",                      "~> 4.6")
   s.add_runtime_dependency("prometheus-alert-buffer-client",  "~> 0.2.0")
   s.add_runtime_dependency("prometheus-api-client",           "~> 0.6")
-  s.add_runtime_dependency("more_core_extensions",            "~> 3.6")
+  s.add_runtime_dependency("more_core_extensions",            ">= 3.6", "< 5")
 
   s.add_development_dependency("codeclimate-test-reporter", "~> 1.0.0")
   s.add_development_dependency("recursive-open-struct",     "~> 1.0.0")