[Python] Python gTTS, is there a way to change the speed of the speech

It seems that on gTTS there is no option for changing the speech of the text-to-speech apart from the slow argument.

I would like to speed up the sound by 5%. Any suggestion on how I can do it?

Best.

tts_de = gTTS("Hallo, guten tag.", lang = 'de')
tts_de.save("s.mp3")

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