diff --git a/Gemfile.lock b/Gemfile.lock
index 789cbf8..b28db9f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/ci/Gemfile.rails-5.2.lock b/ci/Gemfile.rails-5.2.lock
index 347d3b8..9ea0ac8 100644
--- a/ci/Gemfile.rails-5.2.lock
+++ b/ci/Gemfile.rails-5.2.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/ci/Gemfile.rails-6.0.lock b/ci/Gemfile.rails-6.0.lock
index e808b40..6d1bf5a 100644
--- a/ci/Gemfile.rails-6.0.lock
+++ b/ci/Gemfile.rails-6.0.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/ci/Gemfile.rails-6.1.lock b/ci/Gemfile.rails-6.1.lock
index 0a95807..5c92bff 100644
--- a/ci/Gemfile.rails-6.1.lock
+++ b/ci/Gemfile.rails-6.1.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/ci/Gemfile.rails-7.0.lock b/ci/Gemfile.rails-7.0.lock
index e808b40..6d1bf5a 100644
--- a/ci/Gemfile.rails-7.0.lock
+++ b/ci/Gemfile.rails-7.0.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/ci/Gemfile.rails-7.1.lock b/ci/Gemfile.rails-7.1.lock
index 6a1cdde..fd1ad34 100644
--- a/ci/Gemfile.rails-7.1.lock
+++ b/ci/Gemfile.rails-7.1.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    esse-active_record (0.3.3)
+    esse-active_record (0.3.4)
       activerecord (>= 4.2, < 8)
       esse (>= 0.3.0)
 
diff --git a/lib/esse/active_record/callbacks/indexing_on_update.rb b/lib/esse/active_record/callbacks/indexing_on_update.rb
index 1da6c2a..99ca182 100644
--- a/lib/esse/active_record/callbacks/indexing_on_update.rb
+++ b/lib/esse/active_record/callbacks/indexing_on_update.rb
@@ -19,8 +19,11 @@ def call(model)
         update_document(document)
         return true unless document.routing
 
-        prev_record = model.class.new(model.attributes.merge(model.previous_changes.transform_values(&:first))).tap(&:readonly!)
-        prev_document = repo.serialize(prev_record)
+        prev_record = model.class.new
+        model.attributes.merge(model.previous_changes.transform_values(&:first)).each do |key, value|
+          prev_record[key] = value
+        end
+        prev_document = repo.serialize(prev_record.tap(&:readonly!))
 
         return true unless prev_document
         return true if [prev_document.id, prev_document.routing].include?(nil)
diff --git a/lib/esse/active_record/version.rb b/lib/esse/active_record/version.rb
index 011f67a..9e5bd0d 100644
--- a/lib/esse/active_record/version.rb
+++ b/lib/esse/active_record/version.rb
@@ -2,6 +2,6 @@
 
 module Esse
   module ActiveRecord
-    VERSION = '0.3.3'
+    VERSION = '0.3.4'
   end
 end