diff --git a/app/models/data_type.rb b/app/models/data_type.rb
index a0432e058..d0b96a0db 100644
--- a/app/models/data_type.rb
+++ b/app/models/data_type.rb
@@ -17,7 +17,7 @@ class DataType < ApplicationRecord
   has_translation :display_messages, purpose: :display_message
   has_translation :aliases, purpose: :alias
 
-  validates :type, presence: true, length: { maximum: 8192 }
+  validates :type, presence: true, length: { maximum: 65_536 }
   validates :definition_source, length: { maximum: 50 }
 
   validate :validate_version
diff --git a/db/migrate/20260706201844_increase_type_limits_for_data_types_to64kb.rb b/db/migrate/20260706201844_increase_type_limits_for_data_types_to64kb.rb
new file mode 100644
index 000000000..c3768b5f5
--- /dev/null
+++ b/db/migrate/20260706201844_increase_type_limits_for_data_types_to64kb.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class IncreaseTypeLimitsForDataTypesTo64kb < Code0::ZeroTrack::Database::Migration[1.0]
+  def change
+    remove_check_constraint :data_types, 'char_length(type) <= 8192', name: 'check_01ca31b7b9'
+
+    add_check_constraint :data_types, 'char_length(type) <= 65536', name: 'check_01ca31b7b9'
+  end
+end
diff --git a/db/schema_migrations/20260706201844 b/db/schema_migrations/20260706201844
new file mode 100644
index 000000000..5adc26eeb
--- /dev/null
+++ b/db/schema_migrations/20260706201844
@@ -0,0 +1 @@
+d889cbac3eeeb24a71a3983e09e0e4e88506f86288dfbbffca2108339fe03e80
\ No newline at end of file
diff --git a/db/structure.sql b/db/structure.sql
index 8ddde1a75..6ba4bf4be 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -168,7 +168,7 @@ CREATE TABLE data_types (
     type text NOT NULL,
     definition_source text,
     runtime_module_id bigint NOT NULL,
-    CONSTRAINT check_01ca31b7b9 CHECK ((char_length(type) <= 8192)),
+    CONSTRAINT check_01ca31b7b9 CHECK ((char_length(type) <= 65536)),
     CONSTRAINT check_3a7198812e CHECK ((char_length(identifier) <= 50)),
     CONSTRAINT check_a133157a46 CHECK ((char_length(definition_source) <= 50))
 );
diff --git a/spec/models/data_type_spec.rb b/spec/models/data_type_spec.rb
index 42da68396..925703590 100644
--- a/spec/models/data_type_spec.rb
+++ b/spec/models/data_type_spec.rb
@@ -21,7 +21,7 @@
 
   describe 'validations' do
     it { is_expected.to validate_presence_of(:type) }
-    it { is_expected.to validate_length_of(:type).is_at_most(8192) }
+    it { is_expected.to validate_length_of(:type).is_at_most(65_536) }
     it { is_expected.to validate_length_of(:definition_source).is_at_most(50) }
 
     describe '#validate_version' do
diff --git a/spec/requests/grpc/sagittarius/module_service_spec.rb b/spec/requests/grpc/sagittarius/module_service_spec.rb
index 926b8f467..22a1c2926 100644
--- a/spec/requests/grpc/sagittarius/module_service_spec.rb
+++ b/spec/requests/grpc/sagittarius/module_service_spec.rb
@@ -360,7 +360,7 @@
             definition_data_types: [
               {
                 identifier: 'A_TYPE',
-                type: 'A' * 9000,
+                type: 'A' * 66_000,
                 linked_data_type_identifiers: [],
                 version: '1.0.0',
                 definition_source: 'module-a',