--- dynflow.gemspec.orig	2019-07-06 19:59:03 UTC
+++ dynflow.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
       s.add_runtime_dependency(%q<apipie-params>.freeze, [">= 0"])
       s.add_runtime_dependency(%q<algebrick>.freeze, ["~> 0.7.0"])
       s.add_runtime_dependency(%q<concurrent-ruby>.freeze, ["~> 1.1.3"])
-      s.add_runtime_dependency(%q<concurrent-ruby-edge>.freeze, ["~> 0.4.1"])
+      s.add_runtime_dependency(%q<concurrent-ruby-edge>.freeze, ["~> 0.4", ">= 0.4.1"])
       s.add_runtime_dependency(%q<sequel>.freeze, [">= 4.0.0"])
       s.add_development_dependency(%q<rake>.freeze, [">= 0"])
       s.add_development_dependency(%q<rack-test>.freeze, [">= 0"])