diff --git a/lib/rollout/ui/version.rb b/lib/rollout/ui/version.rb
index 06ebc33..0174169 100644
--- a/lib/rollout/ui/version.rb
+++ b/lib/rollout/ui/version.rb
@@ -1,5 +1,5 @@
 class Rollout
   module UI
-    VERSION = "0.5.1"
+    VERSION = "0.5.2"
   end
 end
diff --git a/lib/rollout/ui/web.rb b/lib/rollout/ui/web.rb
index 87f0ae4..9533af1 100644
--- a/lib/rollout/ui/web.rb
+++ b/lib/rollout/ui/web.rb
@@ -50,7 +50,7 @@ class Web < Sinatra::Base
       rollout = config.get(:instance)
       actor = config.get(:actor, scope: self)
       feature_data = rollout.get(params[:feature_name]).data
-      if feature_data['updated_at'] && params[:last_updated_at] != feature_data['updated_at']
+      if feature_data['updated_at'] && params[:last_updated_at].to_s != feature_data['updated_at'].to_s
         redirect "#{feature_path(params[:feature_name])}?error=Rollout version outdated. Review changes below and try again."
       end
       with_rollout_context(rollout, actor: actor) do