diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 53f64edb6f3..f4e259c2744 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -24753,38 +24753,26 @@ the network.")
 (define-public python-rjsmin
   (package
     (name "python-rjsmin")
-    (version "1.1.0")
+    (version "1.2.3")
     (source
       (origin
         (method url-fetch)
         (uri (pypi-uri "rjsmin" version))
         (sha256
          (base32
-          "0cmc72rlkvzz8fl89bc83czkx0pcvhzj7yn7m29r8pgnf5fcfpdi"))
+          "1ihcff58vz4xrv1180v46wy5m80z61y7ab8ajyy4zh54jcjbb20k"))
         (modules '((guix build utils)))
         (snippet
-         '(begin
-            (for-each delete-file (find-files "bench" "\\.js$"))
-            #t))))
-    (build-system python-build-system)
-    (arguments
-     '(#:tests? #f  ; Not all test files included.
-       #:phases
-       (modify-phases %standard-phases
-         (replace 'check
-           (lambda* (#:key inputs outputs tests? #:allow-other-keys)
-             (add-installed-pythonpath inputs outputs)
-             (if tests?
-               (invoke "py.test" "-vv" "tests")
-               #t))))))
+         '(for-each delete-file (find-files "bench" "\\.js$")))))
+    (build-system pyproject-build-system)
     (native-inputs
-     (list python-pytest))
+     (list python-pytest python-setuptools python-wheel))
     (home-page "http://opensource.perlig.de/rjsmin/")
     (synopsis "Javascript Minifier")
-    (description "@code{rJSmin} is a javascript minifier written in Python.  The
-     minifier is based on the semantics of jsmin.c by Douglas Crockford.  The module
-     is a re-implementation aiming for speed, so it can be used at runtime (rather
-                                                                            than during a preprocessing step).")
+    (description "@code{rJSmin} is a javascript minifier written in Python.
+The minifier is based on the semantics of jsmin.c by Douglas Crockford.  The
+module is a re-implementation aiming for speed, so it can be used at
+runtime (rather than during a preprocessing step).")
     (license license:asl2.0)))
 
 (define-public python-xopen