diff --git a/app/models/synapse.rb b/app/models/synapse.rb
index 31e997f4..07a17e54 100644
--- a/app/models/synapse.rb
+++ b/app/models/synapse.rb
@@ -48,6 +48,7 @@ class Synapse < ApplicationRecord
       new = self.attributes.select {|k,v| attrs.include?(k) } 
       old = changed_attributes.select {|k,v| attrs.include?(k) } 
       meta = new.merge(old) # we are prioritizing the old values, keeping them 
+      meta['changed'] = changed_attributes.keys.select {|k| attrs.include?(k) } 
       Events::SynapseUpdated.publish!(self, user, meta)
     end
   end
diff --git a/app/models/topic.rb b/app/models/topic.rb
index 4670c286..b2a2b3bc 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -143,6 +143,7 @@ class Topic < ApplicationRecord
       new = self.attributes.select {|k,v| attrs.include?(k) } 
       old = changed_attributes.select {|k,v| attrs.include?(k) } 
       meta = new.merge(old) # we are prioritizing the old values, keeping them 
+      meta['changed'] = changed_attributes.keys.select {|k| attrs.include?(k) } 
       Events::TopicUpdated.publish!(self, user, meta)
     end
   end