diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index ee29bfa1f9f..61f869aa8e2 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -7804,6 +7804,7 @@ of axis order, spatial projections, and spectral units that exist in the wild.
               (setenv "HOME" "/tmp"))))))
     (native-inputs
      (list python-matplotlib
+           python-pytest-asdf-plugin
            python-pytest-astropy
            python-setuptools
            python-setuptools-scm