diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index ea94f442306e0b34de69da6a9d48e6ebdc5cc580..24df71f338f0349d68564f6adad152e568984165 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -3390,7 +3390,7 @@ (define-public python-numpydoc
            (substitute* "numpydoc/tests/test_plot_directive.py"
              (("3") "2"))))))
     (build-system python-build-system)
-    (native-inputs
+    (propagated-inputs
      `(("python-sphinx" ,python-sphinx)))
     (native-inputs
      `(("python-nose" ,python-nose)))