As far as I know, the Doge coin price is always related to Elon Musk, and this time is no exception. According to some news (click this  link), the price of Doge Coin is rising because X (former Twitter) announced X Payment, which is assumed to make Doge Coin one of the payment tools. Like usual, people hype this, and as the "father" of Doge Coin, Elon Musk successfully "dragged up" the price of Doge Coin.