diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 9534184983..885f18c597 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -4009,19 +4009,19 @@ (define-public python-toml
 (define-public python-jsonrpc-server
   (package
     (name "python-jsonrpc-server")
-    (version "0.3.4")
+    (version "0.4.0")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "python-jsonrpc-server" version))
        (sha256
         (base32
-         "0dzya99nbi4mw7q85vmyw1wfgbx5dpmysnvm0bwx5m4xbi4zafy7"))))
+         "1585ybn3djvx5r5zbxkzlhz2wb1d47y4wrfwaxdyq0gi87jl7ib2"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-mock" ,python-mock)
        ("python-pytest" ,python-pytest)
-       ("python-ujson" ,python-ujson-1)))
+       ("python-ujson" ,python-ujson)))
     (home-page
      "https://github.com/palantir/python-jsonrpc-server")
     (synopsis "JSON RPC 2.0 server library")