diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index ad65efc7bc8b0871c160e535d07b9f7a3ead3fd9..9a034952f95b007dca8c429757b149ac97c51ac3 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   No longer pass depreacted option `-i` to `pg_dump`.
+
+    *Paul Sadauskas*
+
 *   Concurrent `AR::Base#increment!` and `#decrement!` on the same record
     are all reflected in the database rather than overwriting each other.
 
diff --git a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
index 55f839444b6d89231ecf1e64a8047667d002b388..cd7d949239db139b0364e74156b9244d44a69558 100644
--- a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
+++ b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
@@ -54,7 +54,7 @@ def structure_dump(filename)
           ActiveRecord::Base.dump_schemas
         end
 
-        args = ['-i', '-s', '-x', '-O', '-f', filename]
+        args = ['-s', '-x', '-O', '-f', filename]
         unless search_path.blank?
           args << search_path.split(',').map do |part|
             "--schema=#{part.strip}"
diff --git a/activerecord/test/cases/tasks/postgresql_rake_test.rb b/activerecord/test/cases/tasks/postgresql_rake_test.rb
index 184ff7fc63c221add22615bbed74226bf8384687..c3fd0b2383030b07cabf908e9d7baebc9c33a4ac 100644
--- a/activerecord/test/cases/tasks/postgresql_rake_test.rb
+++ b/activerecord/test/cases/tasks/postgresql_rake_test.rb
@@ -204,7 +204,7 @@ def setup
     end
 
     def test_structure_dump
-      Kernel.expects(:system).with('pg_dump', '-i', '-s', '-x', '-O', '-f', @filename, 'my-app-db').returns(true)
+      Kernel.expects(:system).with('pg_dump', '-s', '-x', '-O', '-f', @filename, 'my-app-db').returns(true)
 
       ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
     end
@@ -212,7 +212,7 @@ def test_structure_dump
     def test_structure_dump_with_schema_search_path
       @configuration['schema_search_path'] = 'foo,bar'
 
-      Kernel.expects(:system).with('pg_dump', '-i', '-s', '-x', '-O', '-f', @filename, '--schema=foo --schema=bar', 'my-app-db').returns(true)
+      Kernel.expects(:system).with('pg_dump', '-s', '-x', '-O', '-f', @filename, '--schema=foo --schema=bar', 'my-app-db').returns(true)
 
       ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
     end
@@ -220,7 +220,7 @@ def test_structure_dump_with_schema_search_path
     def test_structure_dump_with_schema_search_path_and_dump_schemas_all
       @configuration['schema_search_path'] = 'foo,bar'
 
-      Kernel.expects(:system).with("pg_dump", '-i', '-s', '-x', '-O', '-f', @filename,  'my-app-db').returns(true)
+      Kernel.expects(:system).with("pg_dump", '-s', '-x', '-O', '-f', @filename,  'my-app-db').returns(true)
 
       with_dump_schemas(:all) do
         ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
@@ -228,7 +228,7 @@ def test_structure_dump_with_schema_search_path_and_dump_schemas_all
     end
 
     def test_structure_dump_with_dump_schemas_string
-      Kernel.expects(:system).with("pg_dump", '-i', '-s', '-x', '-O', '-f', @filename, '--schema=foo --schema=bar', "my-app-db").returns(true)
+      Kernel.expects(:system).with("pg_dump", '-s', '-x', '-O', '-f', @filename, '--schema=foo --schema=bar', "my-app-db").returns(true)
 
       with_dump_schemas('foo,bar') do
         ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)