diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index 1a25681c1e..c31aaa26b6 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -38,6 +38,7 @@ (define-module (gnu packages astronomy)
   #:use-module (gnu packages bash)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages boost)
+  #:use-module (gnu packages certs)
   #:use-module (gnu packages check)
   #:use-module (gnu packages cmake)
   #:use-module (gnu packages compression)
@@ -5796,7 +5797,9 @@ (define-public python-skyfield
                 (with-directory-excursion "ci"
                   (apply invoke "python" test-flags))))))))
     (native-inputs
-     (list python-assay python-pandas))
+     (list nss-certs-for-test
+           python-assay
+           python-pandas))
     (propagated-inputs
      (list python-certifi
            python-jplephem