diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index b3d211e7b7..5dcaba0871 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -1316,9 +1316,10 @@ (define-public python-testtools
         (base32
          "1dyml28ykpl5jb9khdmcdvhy1cxqingys6qvj2k04fzlaj6z3bbx"))))
     (build-system python-build-system)
+    (propagated-inputs
+     `(("python-mimeparse" ,python-mimeparse)))
     (inputs
      `(("python-setuptools" ,python-setuptools)
-       ("python-mimeparse" ,python-mimeparse)
        ("python-extras" ,python-extras)))
     (home-page "https://github.com/testing-cabal/testtools")
     (synopsis