diff --git a/gnu/packages/ruby.scm b/gnu/packages/ruby.scm
index 1dcd5f76a5..f61044f76b 100644
--- a/gnu/packages/ruby.scm
+++ b/gnu/packages/ruby.scm
@@ -14078,7 +14078,35 @@ (define-public ruby-sorbet-runtime
   (package
     (name "ruby-sorbet-runtime")
     (version sorbet-version)
-    (source (make-sorbet-gem-source "runtime"))
+    (source
+     (origin
+       (inherit sorbet-monorepo)
+       (file-name (git-file-name name version))
+       (modules '((guix build utils)
+                  (ice-9 ftw)))
+       (snippet
+        #~(begin
+            (use-modules (guix build utils))
+            (let* ((name "runtime")
+                   (gems "gems")
+                   (gem (string-append gems "/sorbet-" name)))
+              (for-each
+               (lambda (x)
+                 (unless (or (string=? "." x)
+                             (string=? ".." x))
+                   (delete-file-recursively x)))
+               (scandir "."
+                        (lambda (x)
+                          (and (eq? (stat:type (stat x)) 'directory)
+                               (not (string-prefix? gems x))))))
+              (for-each
+               delete-file
+               (find-files "."
+                           (lambda (x _)
+                             (not (string-prefix? (string-append "./" gems) x)))
+                           #:directories? #f))
+              (copy-recursively gem ".")
+              (delete-file-recursively gems))))))
     (build-system ruby-build-system)
     ;; 25 out of 841 tests currently fail, seemingly due to invalid
     ;; assumptions about file names in the build environment (see: