我想不出如何让我的Plotly图表只显示整数

import plotly.graph_objects as go

x = [1, 2, 3, 4, 5]
y = [1.5, 2.7, 3.8, 4.2, 5.1]

fig = go.Figure(data=[go.Bar(x=x, y=y)])

fig.update_layout(
    xaxis=dict(
        tickmode='linear',
        dtick=1
    )
)

fig.show()

import plotly.graph_objects as go

x = [1, 2, 3, 4, 5]
y = [1.5, 2.7, 3.8, 4.2, 5.1]

fig = go.Figure(data=[go.Scatter(x=x, y=y, mode='markers')])

fig.update_layout(
    xaxis=dict(
        tickformat='d'
    )
)

fig.show()