The rupee strengthened by 5 paise to Rs 45.19 per dollar at the Interbank Foreign Exchange market today, supported by a higher opening in the stock market and the dollar’s weakness against other currency rivals.

The domestic unit depreciated by 6 paise to close at Rs 45.24/25 per dollar in the previous session due to sustained dollar demand from importers and sluggish equities.

Forex dealers said a higher opening in the stock market and the dollar’s weakness against other currencies helped the rupee to strengthen.