diff --git a/spec/API_specification/index.rst b/spec/API_specification/index.rst
index 55faa1c4d..1d4c9cfef 100644
--- a/spec/API_specification/index.rst
+++ b/spec/API_specification/index.rst
@@ -7,20 +7,20 @@ API specification
    :caption: API specification
    :maxdepth: 3
 
-   function_and_method_signatures
    array_object
-   indexing
-   data_types
-   data_type_functions
-   type_promotion
    broadcasting
+   constants
    creation_functions
-   manipulation_functions
+   data_type_functions
+   data_types
    elementwise_functions
-   statistical_functions
+   function_and_method_signatures
+   indexing
    linear_algebra_functions
+   manipulation_functions
    searching_functions
-   sorting_functions
    set_functions
+   sorting_functions
+   statistical_functions
+   type_promotion
    utility_functions
-   constants