active_remote.gemspec in active_remote-3.1.2 vs active_remote.gemspec in active_remote-3.1.3

@@ -17,10 +17,10 @@
   s.require_paths = ["lib"]
 
   ##
   # Dependencies
   #
-  s.add_dependency "activemodel", ">= 4.0"
+  s.add_dependency "activemodel", ">= 4.0", "< 5"
   s.add_dependency "activesupport", ">= 4.0"
   s.add_dependency "protobuf", ">= 3.0"
 
   ##
   # Development Dependencies