[Python] Heads or Tails / Coin-flip program

I want to write a coin flip or "Heads or Tails" program, but when I run it, it only gets either heads or tails everytime. I can't see why, it's a logical error so I find it hard to spot.

import random

flips = 1

coin = random.randint(1,2)

heads = 0
tails= 0

while flips <= 100:
if coin == 1:
print("Heads")
heads += 1
flips +=1
elif coin == 2:
print("tails")
tails += 1
flips +=1

print("You got", heads, "heads and", tails,"tails!")


input("Exit")

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