diff --git a/gnu/packages/python-check.scm b/gnu/packages/python-check.scm
index 468a339788..e566f3140a 100644
--- a/gnu/packages/python-check.scm
+++ b/gnu/packages/python-check.scm
@@ -1813,14 +1813,14 @@ (define-public python-mockito
 (define-public python-mypy-extensions
   (package
     (name "python-mypy-extensions")
-    (version "0.4.3")
+    (version "1.0.0")
     (source
       (origin
         (method url-fetch)
         (uri (pypi-uri "mypy_extensions" version))
         (sha256
          (base32
-          "1a04qsk8hd1lqns8w1j7cr0vmvbhg450di5k1i16kqxkbf7q30id"))))
+          "10h7mwjjfbwxzq7jzaj1pnv9g6laa1k0ckgw72j44160bnazinvm"))))
     (build-system python-build-system)
     (arguments `(#:tests? #f)); no tests
     (home-page "https://github.com/python/mypy_extensions")