diff --git a/docs/source/_static/js/apitoc.js b/docs/source/_static/js/apitoc.js
index b2ed952..befbed6 100644
--- a/docs/source/_static/js/apitoc.js
+++ b/docs/source/_static/js/apitoc.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
   (function ($) {
-    if (window.location.href.match("/api/*") !== null) {
+    if (window.location.href.match("/api/pronto.*") !== null) {
       $(".nav-list")
         .children()
         .filter("li")
@@ -18,6 +18,22 @@ $(document).ready(function() {
           );
           $("#apitoc").append(html);
         });
+    } else if (window.location.href.match("/api/warnings*") !== null) {
+      $(".nav-list")
+        .children()
+        .filter("li")
+        .append("<ul id='apitoc' class='nav nav-list'></ul>");
+      $( "dt" )
+        .each(function( index ) {
+          var html = (
+            "<li><a href='#"
+            + $( this ).attr("id")
+            + "'><code>"
+            + $( this ).find(".sig-name").text()
+            + "</code></a></li>"
+          );
+          $("#apitoc").append(html);
+        });
     }
   })(window.$jqTheme || window.jQuery);
 })
diff --git a/docs/source/api.rst b/docs/source/api.rst
index d2ff3e2..6c02f66 100644
--- a/docs/source/api.rst
+++ b/docs/source/api.rst
@@ -78,3 +78,20 @@ exception of custom parser implementations.
    pronto.RelationshipData
    pronto.SynonymData
    pronto.TermData
+
+
+Warnings
+--------
+
+.. toctree::
+   :hidden:
+
+   warnings <api/warnings>
+
+.. autosummary::
+   :nosignatures:
+
+   pronto.warnings.ProntoWarning
+   pronto.warnings.NotImplementedWarning
+   pronto.warnings.SyntaxWarning
+   pronto.warnings.UnstableWarning
diff --git a/docs/source/api/warnings.rst b/docs/source/api/warnings.rst
new file mode 100644
index 0000000..07dd4d3
--- /dev/null
+++ b/docs/source/api/warnings.rst
@@ -0,0 +1,12 @@
+Warnings
+========
+
+.. currentmodule:: pronto.warnings
+
+.. autoexception:: ProntoWarning
+
+.. autoexception:: NotImplementedWarning
+
+.. autoexception:: SyntaxWarning
+
+.. autoexception:: UnstableWarning
diff --git a/docs/source/conf.py b/docs/source/conf.py
index d30fcc6..99a749f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -28,9 +28,6 @@
 # -- Sphinx Setup ------------------------------------------------------------
 
 def setup(app):
-    # Force regenerating autosummary
-    if os.path.exists(os.path.join(docssrc_dir, "api")):
-        shutil.rmtree(os.path.join(docssrc_dir, "api"))
     # Add custom stylesheet
     app.add_css_file("css/main.css")
     app.add_js_file("js/apitoc.js")