diff --git a/schema/decls.json b/schema/decls.json
index 456a798186..3695a0a8b6 100644
--- a/schema/decls.json
+++ b/schema/decls.json
@@ -116,6 +116,21 @@
         },
         {
           "$ref": "members.json#/definitions/alias"
+        },
+        {
+          "$ref": "#/definitions/alias"
+        },
+        {
+          "$ref": "#/definitions/constant"
+        },
+        {
+          "$ref": "#/definitions/class"
+        },
+        {
+          "$ref": "#/definitions/module"
+        },
+        {
+          "$ref": "#/definitions/interface"
         }
       ]
     },
diff --git a/schema/members.json b/schema/members.json
index 1643eb2d0f..88b31807bd 100644
--- a/schema/members.json
+++ b/schema/members.json
@@ -34,6 +34,9 @@
         },
         "location": {
           "$ref": "location.json"
+        },
+        "overload": {
+          "type": "boolean"
         }
       },
       "required": ["member", "kind", "types", "comment", "annotations", "location"]
diff --git a/test/rbs/schema_test.rb b/test/rbs/schema_test.rb
index 0bd976ad0d..0eeda658ab 100644
--- a/test/rbs/schema_test.rb
+++ b/test/rbs/schema_test.rb
@@ -262,4 +262,17 @@ def foo: () -> Integer
 
     assert_decl decl, :interface
   end
+
+  def test_nested
+    decl, = RBS::Parser.parse_signature(<<EOF)
+module RBS
+  VERSION: String
+
+  class Namespace
+  end
+end
+EOF
+
+    assert_decl decl, :module
+  end
 end