diff --git a/app/services/authorize_follow_service.rb b/app/services/authorize_follow_service.rb
index 2e0b6d26c..ac465bdb2 100644
--- a/app/services/authorize_follow_service.rb
+++ b/app/services/authorize_follow_service.rb
@@ -12,6 +12,9 @@ class AuthorizeFollowService < BaseService
   def build_xml(follow_request)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, Time.now.utc, follow_request.id, 'FollowRequest'
+        title xml, "#{follow_request.target_account.acct} authorizes follow request by #{follow_request.account.acct}"
+
         author(xml) do
           include_author xml, follow_request.target_account
         end
diff --git a/app/services/block_service.rb b/app/services/block_service.rb
index bcd8c44c4..bd914d8be 100644
--- a/app/services/block_service.rb
+++ b/app/services/block_service.rb
@@ -20,6 +20,7 @@ class BlockService < BaseService
   def build_xml(block)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, block.created_at, block.id, 'Block'
         title xml, "#{block.account.acct} no longer wishes to interact with #{block.target_account.acct}"
 
         author(xml) do
diff --git a/app/services/favourite_service.rb b/app/services/favourite_service.rb
index 7038bc222..824729ed6 100644
--- a/app/services/favourite_service.rb
+++ b/app/services/favourite_service.rb
@@ -24,6 +24,7 @@ class FavouriteService < BaseService
   def build_xml(favourite)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, favourite.created_at, favourite.id, 'Favourite'
         title xml, "#{favourite.account.acct} favourited a status by #{favourite.status.account.acct}"
 
         author(xml) do
@@ -32,6 +33,7 @@ class FavouriteService < BaseService
 
         object_type xml, :activity
         verb xml, :favorite
+        in_reply_to xml, TagManager.instance.uri_for(favourite.status), TagManager.instance.url_for(favourite.status)
 
         target(xml) do
           include_target xml, favourite.status
diff --git a/app/services/follow_service.rb b/app/services/follow_service.rb
index 5a4250636..d67b1bf2d 100644
--- a/app/services/follow_service.rb
+++ b/app/services/follow_service.rb
@@ -57,6 +57,7 @@ class FollowService < BaseService
   def build_follow_request_xml(follow_request)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, follow_request.created_at, follow_request.id, 'FollowRequest'
         title xml, "#{follow_request.account.acct} requested to follow #{follow_request.target_account.acct}"
 
         author(xml) do
@@ -76,6 +77,7 @@ class FollowService < BaseService
   def build_follow_xml(follow)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, follow.created_at, follow.id, 'Follow'
         title xml, "#{follow.account.acct} started following #{follow.target_account.acct}"
 
         author(xml) do
diff --git a/app/services/reject_follow_service.rb b/app/services/reject_follow_service.rb
index ac92ad5f7..1b03d62e6 100644
--- a/app/services/reject_follow_service.rb
+++ b/app/services/reject_follow_service.rb
@@ -12,6 +12,9 @@ class RejectFollowService < BaseService
   def build_xml(follow_request)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, Time.now.utc, follow_request.id, 'FollowRequest'
+        title xml, "#{follow_request.target_account.acct} rejects follow request by #{follow_request.account.acct}"
+
         author(xml) do
           include_author xml, follow_request.target_account
         end
diff --git a/app/services/unblock_service.rb b/app/services/unblock_service.rb
index 4ff180747..c4f789f74 100644
--- a/app/services/unblock_service.rb
+++ b/app/services/unblock_service.rb
@@ -13,6 +13,7 @@ class UnblockService < BaseService
   def build_xml(block)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, Time.now.utc, block.id, 'Block'
         title xml, "#{block.account.acct} no longer blocks #{block.target_account.acct}"
 
         author(xml) do
diff --git a/app/services/unfavourite_service.rb b/app/services/unfavourite_service.rb
index 7ad1778f6..1d3e6f06d 100644
--- a/app/services/unfavourite_service.rb
+++ b/app/services/unfavourite_service.rb
@@ -15,6 +15,7 @@ class UnfavouriteService < BaseService
   def build_xml(favourite)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, Time.now.utc, favourite.id, 'Favourite'
         title xml, "#{favourite.account.acct} no longer favourites a status by #{favourite.status.account.acct}"
 
         author(xml) do
@@ -23,6 +24,7 @@ class UnfavouriteService < BaseService
 
         object_type xml, :activity
         verb xml, :unfavorite
+        in_reply_to xml, TagManager.instance.uri_for(favourite.status), TagManager.instance.url_for(favourite.status)
 
         target(xml) do
           include_target xml, favourite.status
diff --git a/app/services/unfollow_service.rb b/app/services/unfollow_service.rb
index 8982b1c19..07f9b93dd 100644
--- a/app/services/unfollow_service.rb
+++ b/app/services/unfollow_service.rb
@@ -15,6 +15,7 @@ class UnfollowService < BaseService
   def build_xml(follow)
     Nokogiri::XML::Builder.new do |xml|
       entry(xml, true) do
+        unique_id xml, Time.now.utc, follow.id, 'Follow'
         title xml, "#{follow.account.acct} is no longer following #{follow.target_account.acct}"
 
         author(xml) do