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sunpy · Jan 28, 2025 · b4b052c · b4b052c
1 parent 368e22a
commit b4b052c
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/sunkit_spex/spectrum/spectrum.py b/sunkit_spex/spectrum/spectrum.py
@@ -9,6 +9,7 @@
 from astropy.utils import lazyproperty
 
 __all__ = ["SpectralAxis", "Spectrum", "gwcs_from_array"]
+__doctest_requires__ = {"Spectrum": ["ndcube>=2.3"]}
 
 
 def gwcs_from_array(array):