diff --git a/dictionary/sqlite/create_english_db_with_translation_and_ipa.py b/dictionary/sqlite/create_english_db_with_translation_and_ipa.py
index 8792bb1..8ec5f70 100644
--- a/dictionary/sqlite/create_english_db_with_translation_and_ipa.py
+++ b/dictionary/sqlite/create_english_db_with_translation_and_ipa.py
@@ -17,6 +17,9 @@
 )
 ''')
 
+c.execute('CREATE INDEX IF NOT EXISTS idx_word ON words(word);')
+c.execute("PRAGMA journal_mode=WAL")
+
 # Insert data
 for word, details in data.items():
     c.execute('''
diff --git a/dictionary/sqlite/words_with_frequency_and_translation_and_ipa.sqlite3 b/dictionary/sqlite/words_with_frequency_and_translation_and_ipa.sqlite3
index 567ca95..e32e442 100644
Binary files a/dictionary/sqlite/words_with_frequency_and_translation_and_ipa.sqlite3 and b/dictionary/sqlite/words_with_frequency_and_translation_and_ipa.sqlite3 differ