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-rw-r--r--gnu/packages/astronomy.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index 523030a0f7..e9caced125 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -2663,7 +2663,7 @@ Science Institute} image array manipulation functions.")
               (sha256
                (base32
                 "14457izlbnks84dyza75ib3nvx2w8nhlqm9vc1zb7hbhknb5gjvw"))))
-    (build-system python-build-system)
+    (build-system pyproject-build-system)
     (arguments
      (list #:tests? #f)) ;No tests
     (propagated-inputs (list python-numpy))