diff --git a/doc/source/index.rst b/doc/source/index.rst
index 10c31c216..fc7901caf 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -10,6 +10,7 @@ Specifications and RFEs
 .. toctree::
    :maxdepth: 2
 
+   specs/train/index
    specs/stein/index
    specs/rocky/index
    specs/queens/index
diff --git a/specs/train/index.rst b/specs/train/index.rst
new file mode 100644
index 000000000..bdc488aeb
--- /dev/null
+++ b/specs/train/index.rst
@@ -0,0 +1,9 @@
+=====
+Train
+=====
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+   *
diff --git a/specs/train/placeholder.rst b/specs/train/placeholder.rst
new file mode 100644
index 000000000..903802d1c
--- /dev/null
+++ b/specs/train/placeholder.rst
@@ -0,0 +1,31 @@
+..
+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+==================
+(Placeholder Spec)
+==================
+
+This file is just a placeholder for the specs directory.
+It will be removed soon after some spec is merged.
+
+The latest spec template is found at ``specs/template.rst``
+in the ``neutron-specs`` repository.
+
+Problem Description
+===================
+
+Sphinx toctree complains if no file exists in a directory
+specified in toctree glob.
+
+Proposed Change
+===============
+
+Add this file.
+
+References
+==========
+
+None.