Set labels to data using plot_altitude

[HealthyPear]

I want to make a simple plot that shows the evolution of altitude with time for different declinations

The working code snippet without labels is the following,

fig, ax = plt.subplots()

for dec in range(-90,90,10):

    test_source = SkyCoord(dec=dec, ra=22,unit="deg",frame="icrs")

    time_range = Time([f"2023-01-01 00:00", f"2023-01-01 23:59"])
    time_resolution = 1 * u.h
    observe_time = time_grid_from_range(time_range, time_resolution=time_resolution)

    plot_options = {#"label":dec,
                    "fmt":"-"
                   }
    
    plot_altitude(test_source,
                  observer,
                  observe_time,
                  ax=ax,
                  airmass_yaxis=True,
                  style_kwargs=plot_options
                 )

As soon as I uncomment the "label" option which I naïvely thought would work I get the following error,

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[132], line 15
      9 observe_time = time_grid_from_range(time_range, time_resolution=time_resolution)
     11 plot_options = {"label":dec,
     12                 "fmt":"-"
     13                }
---> 15 plot_altitude(test_source,
     16               observer,
     17               observe_time,
     18               ax=ax,
     19               airmass_yaxis=True,
     20               style_kwargs=plot_options
     21              )

File ~/Applications/mambaforge/envs/swgo-plot/lib/python3.11/site-packages/astroplan/plots/time_dependent.py:402, in plot_altitude(targets, observer, time, ax, style_kwargs, style_sheet, brightness_shading, airmass_yaxis, min_altitude, min_region, max_altitude, max_region)
    399         target_name = ''
    401     # Plot data
--> 402     ax.plot_date(time.plot_date, masked_altitude, label=target_name, **style_kwargs)
    404 # Format the time axis
    405 ax.set_xlim([time[0].plot_date, time[-1].plot_date])

TypeError: matplotlib.axes._axes.Axes.plot_date() got multiple values for keyword argument 'label'

Is this a bug or am I using this in a wrong way?