--- actioncable.gemspec.orig	2017-09-12 19:41:46 UTC
+++ actioncable.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<actionpack>.freeze, ["= 5.1.7"])
       s.add_runtime_dependency(%q<nio4r>.freeze, ["~> 2.0"])
-      s.add_runtime_dependency(%q<websocket-driver>.freeze, ["~> 0.6.1"])
+      s.add_runtime_dependency(%q<websocket-driver>.freeze, ["~> 0.6", ">= 0.6.1"])
     else
       s.add_dependency(%q<actionpack>.freeze, ["= 5.1.7"])
       s.add_dependency(%q<nio4r>.freeze, ["~> 2.0"])