diff --git a/src/packageurl/contrib/purl2url.py b/src/packageurl/contrib/purl2url.py
index a4fd3c0..ad779d0 100644
--- a/src/packageurl/contrib/purl2url.py
+++ b/src/packageurl/contrib/purl2url.py
@@ -171,7 +171,7 @@ def build_gitlab_repo_url(purl):
         return f"https://gitlab.com/{namespace}/{name}"
 
 
-@repo_router.route("pkg:gem/.*")
+@repo_router.route("pkg:(gem|rubygems)/.*")
 def build_rubygems_repo_url(purl):
     """
     Return a rubygems repo URL from the `purl` string.
diff --git a/tests/contrib/test_purl2url.py b/tests/contrib/test_purl2url.py
index b471ff0..ccf9f65 100644
--- a/tests/contrib/test_purl2url.py
+++ b/tests/contrib/test_purl2url.py
@@ -39,7 +39,8 @@ def test_purl2url_get_repo_url():
         "pkg:cargo/rand@0.7.2": "https://crates.io/crates/rand/0.7.2",
         "pkg:cargo/abc": "https://crates.io/crates/abc",
         "pkg:gem/bundler@2.3.23": "https://rubygems.org/gems/bundler/versions/2.3.23",
-        "pkg:rubygems/package-name": None,
+        "pkg:rubygems/bundler@2.3.23": "https://rubygems.org/gems/bundler/versions/2.3.23",
+        "pkg:rubygems/package-name": "https://rubygems.org/gems/package-name",
         "pkg:bitbucket/birkenfeld/pygments-main": "https://bitbucket.org/birkenfeld/pygments-main",
         "pkg:bitbucket/birkenfeld/pygments-main@244fd47e07d1014f0aed9c": "https://bitbucket.org/birkenfeld/pygments-main",
         "pkg:bitbucket/birkenfeld/pygments-main@master#views": "https://bitbucket.org/birkenfeld/pygments-main",
@@ -128,8 +129,10 @@ def test_purl2url_get_inferred_urls():
             "https://gitlab.com/tg1999/firebase",
             "https://gitlab.com/tg1999/firebase/-/archive/1a122122/firebase-1a122122.tar.gz",
         ],
-        "pkg:pypi/sortedcontainers@2.4.0": ["https://pypi.org/project/sortedcontainers/2.4.0/"],
-        "pkg:rubygems/package-name": [],
+        "pkg:pypi/sortedcontainers@2.4.0": [
+            "https://pypi.org/project/sortedcontainers/2.4.0/"
+        ],
+        "pkg:rubygems/package-name": ["https://rubygems.org/gems/package-name"],
         "pkg:bitbucket/birkenfeld": [],
     }