diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index c911d894b1..dbb6a8b89e 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -27560,7 +27560,7 @@ they use the same path.")
        (sha256
         (base32
          "1sy3vdfyyx3bc5590zb7gwpsmimqz8m992x9hsydq8nmhixqjrxa"))))
-    (build-system python-build-system)
+    (build-system pyproject-build-system)
     (propagated-inputs
      (list python-blosc
            python-locket