Hi I am using plotly express to plot a histogram.

import plotly.express as px
px.histogram(
 cdf,
 x='diag',
 histnorm='probability',
 labels={'diag': 'cosine similarity'},
 title='Cosine Similarity of Diagonal Samples',
 color_discrete_sequence=['green'],
)

The y label is shown as count, I want the y label to be called probability.
I tried passing labels={'diag': 'cosine similarity', 'count': 'probability'} but that doesn't work? How do I change the y label ?