diff --git a/lib/activerecord_slotted_counters/adapters/pg_upsert.rb b/lib/activerecord_slotted_counters/adapters/pg_sqlite_upsert.rb
similarity index 77%
rename from lib/activerecord_slotted_counters/adapters/pg_upsert.rb
rename to lib/activerecord_slotted_counters/adapters/pg_sqlite_upsert.rb
index b16ad8f..ec9b92e 100644
--- a/lib/activerecord_slotted_counters/adapters/pg_upsert.rb
+++ b/lib/activerecord_slotted_counters/adapters/pg_sqlite_upsert.rb
@@ -2,7 +2,7 @@
 
 module ActiveRecordSlottedCounters
   module Adapters
-    class PgUpsert
+    class PgSqliteUpsert
       attr_reader :klass
 
       def initialize(klass)
@@ -10,7 +10,11 @@ def initialize(klass)
       end
 
       def apply?
-        ActiveRecord::VERSION::MAJOR < 7 && klass.connection.adapter_name == ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::ADAPTER_NAME
+        return false if ActiveRecord::VERSION::MAJOR >= 7
+
+        adapter_name = klass.connection.adapter_name
+
+        postgresql_connection?(adapter_name) || sqlite_connection?(adapter_name)
       end
 
       def bulk_insert(attributes, on_duplicate: nil, unique_by: nil)
@@ -83,6 +87,18 @@ def quote_record(columns, record_values)
       def quote_many_records(columns, data)
         data.map { |values| quote_record(columns, values) }.join(",")
       end
+
+      def postgresql_connection?(adapter_name)
+        return false unless defined?(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
+
+        adapter_name == ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::ADAPTER_NAME
+      end
+
+      def sqlite_connection?(adapter_name)
+        return false unless defined?(ActiveRecord::ConnectionAdapters::SQLite3Adapter)
+
+        adapter_name == ActiveRecord::ConnectionAdapters::SQLite3Adapter::ADAPTER_NAME
+      end
     end
   end
 end
diff --git a/lib/activerecord_slotted_counters/adapters/rails_upsert.rb b/lib/activerecord_slotted_counters/adapters/rails_upsert.rb
index 1dd103e..6c551ff 100644
--- a/lib/activerecord_slotted_counters/adapters/rails_upsert.rb
+++ b/lib/activerecord_slotted_counters/adapters/rails_upsert.rb
@@ -3,7 +3,7 @@
 module ActiveRecordSlottedCounters
   module Adapters
     class RailsUpsert
-      attr_reader :klass
+      attr_reader :klass, :current_adapter_name
 
       def initialize(klass)
         @klass = klass
diff --git a/lib/activerecord_slotted_counters/has_slotted_counter.rb b/lib/activerecord_slotted_counters/has_slotted_counter.rb
index 259db8c..ab86ee6 100644
--- a/lib/activerecord_slotted_counters/has_slotted_counter.rb
+++ b/lib/activerecord_slotted_counters/has_slotted_counter.rb
@@ -4,7 +4,7 @@
 require "activerecord_slotted_counters/utils"
 
 require "activerecord_slotted_counters/adapters/rails_upsert"
-require "activerecord_slotted_counters/adapters/pg_upsert"
+require "activerecord_slotted_counters/adapters/pg_sqlite_upsert"
 
 module ActiveRecordSlottedCounters
   class SlottedCounter < ::ActiveRecord::Base
@@ -42,14 +42,14 @@ def slotted_counter_db_adapter
       def set_slotted_counter_db_adapter
         available_adapters = [
           ActiveRecordSlottedCounters::Adapters::RailsUpsert,
-          ActiveRecordSlottedCounters::Adapters::PgUpsert
+          ActiveRecordSlottedCounters::Adapters::PgSqliteUpsert
         ]
 
         adapter = available_adapters
           .map { |adapter| adapter.new(self) }
           .detect { |adapter| adapter.apply? }
 
-        raise NotSupportedAdapter.new(connection.adapter_name) if adapter.nil?
+        raise NotSupportedAdapter.new(current_adapter_name) if adapter.nil?
 
         adapter
       end
diff --git a/spec/slotted_counter_spec.rb b/spec/slotted_counter_spec.rb
index 6645412..cc41d44 100644
--- a/spec/slotted_counter_spec.rb
+++ b/spec/slotted_counter_spec.rb
@@ -128,11 +128,18 @@
   def insert_association_sql(association_class, article_id)
     association_table = association_class.arel_table
     foreign_key = association_class.reflections["article"].foreign_key
+    current_date_sql_command =
+      if defined?(ActiveRecord::ConnectionAdapters::SQLite3Adapter)
+        "date('now')"
+      else
+        "now()"
+      end
+
     insert_manager = Arel::InsertManager.new
     insert_manager.insert([
       [association_table[foreign_key], article_id],
-      [association_table[:created_at], Arel.sql("now()")],
-      [association_table[:updated_at], Arel.sql("now()")]
+      [association_table[:created_at], Arel.sql(current_date_sql_command)],
+      [association_table[:updated_at], Arel.sql(current_date_sql_command)]
     ])
 
     insert_manager.to_sql
diff --git a/spec/support/shared_examples_for_cache_counters.rb b/spec/support/shared_examples_for_cache_counters.rb
index c1e1200..c9342e3 100644
--- a/spec/support/shared_examples_for_cache_counters.rb
+++ b/spec/support/shared_examples_for_cache_counters.rb
@@ -153,11 +153,18 @@
   def insert_comment_sql(comment_class, article_id)
     comment_table = comment_class.arel_table
     foreign_key = comment_class.reflections["article"].foreign_key
+    current_date_sql_command =
+      if defined?(ActiveRecord::ConnectionAdapters::SQLite3Adapter)
+        "date('now')"
+      else
+        "now()"
+      end
+
     insert_manager = Arel::InsertManager.new
     insert_manager.insert([
       [comment_table[foreign_key], article_id],
-      [comment_table[:created_at], Arel.sql("now()")],
-      [comment_table[:updated_at], Arel.sql("now()")]
+      [comment_table[:created_at], Arel.sql(current_date_sql_command)],
+      [comment_table[:updated_at], Arel.sql(current_date_sql_command)]
     ])
 
     insert_manager.to_sql