diff --git a/specs/index.rst b/specs/index.rst
index 9397693..6149801 100644
--- a/specs/index.rst
+++ b/specs/index.rst
@@ -12,3 +12,4 @@
    backlog/index
    mitaka/index
    newton/index
+   ocata/index
diff --git a/specs/ocata/index.rst b/specs/ocata/index.rst
new file mode 100644
index 0000000..e4e4ef9
--- /dev/null
+++ b/specs/ocata/index.rst
@@ -0,0 +1,7 @@
+=======================
+ Ocata Specifications
+=======================
+
+.. toctree::
+   :glob:
+   :maxdepth: 2