diff --git a/.github/workflows/dist.yml b/.github/workflows/dist.yml
index cf93ef8..a2da635 100644
--- a/.github/workflows/dist.yml
+++ b/.github/workflows/dist.yml
@@ -85,7 +85,7 @@ jobs:
       matrix:
         os:
         - windows-latest
-        - macos-13
+        - macos-15-intel
         - ubuntu-22.04
         python_version:
         - 3.7
@@ -97,7 +97,7 @@ jobs:
         - "3.13"
         architecture: [x86, x64]
         exclude:
-        - os: macos-13
+        - os: macos-15-intel
           architecture: x86
         - os: ubuntu-22.04
           architecture: x86
diff --git a/cxxheaderparser/parser.py b/cxxheaderparser/parser.py
index 49be8e4..8a64add 100644
--- a/cxxheaderparser/parser.py
+++ b/cxxheaderparser/parser.py
@@ -446,6 +446,11 @@ def _parse_namespace(
 
             while True:
                 names.append(tok.value)
+
+                atok = self.lex.token_if_in_set(self._attribute_start_tokens)
+                if atok:
+                    self._consume_attribute(atok)
+
                 tok = self._next_token_must_be("DBL_COLON", endtok)
                 if tok.type == endtok:
                     break
diff --git a/tests/test_namespaces.py b/tests/test_namespaces.py
index 0b6892f..1e0c8ba 100644
--- a/tests/test_namespaces.py
+++ b/tests/test_namespaces.py
@@ -195,3 +195,14 @@ def test_ns_alias_global() -> None:
             ns_alias=[NamespaceAlias(alias="ANS", names=["::", "my", "ns"])]
         )
     )
+
+
+def test_ns_attr() -> None:
+    content = """
+      namespace n __attribute__((visibility("hidden"))) {}
+    """
+    data = parse_string(content, cleandoc=True)
+
+    assert data == ParsedData(
+        namespace=NamespaceScope(namespaces={"n": NamespaceScope(name="n")})
+    )