diff --git a/docs/_includes/components/navbar.html b/docs/_includes/components/navbar.html
index d0f8a67d68..e876e80a3d 100644
--- a/docs/_includes/components/navbar.html
+++ b/docs/_includes/components/navbar.html
@@ -43,7 +43,7 @@
             <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
             <li><a href="#">Link</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
@@ -64,7 +64,7 @@
           <ul class="nav navbar-nav navbar-right">
             <li><a href="#">Link</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
@@ -98,7 +98,7 @@
         <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
         <li><a href="#">Link</a></li>
         <li class="dropdown">
-          <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
           <ul class="dropdown-menu" role="menu">
             <li><a href="#">Action</a></li>
             <li><a href="#">Another action</a></li>
@@ -119,7 +119,7 @@
       <ul class="nav navbar-nav navbar-right">
         <li><a href="#">Link</a></li>
         <li class="dropdown">
-          <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
           <ul class="dropdown-menu" role="menu">
             <li><a href="#">Action</a></li>
             <li><a href="#">Another action</a></li>
diff --git a/docs/_includes/js/dropdowns.html b/docs/_includes/js/dropdowns.html
index 64b03fa54f..826fe6c08a 100644
--- a/docs/_includes/js/dropdowns.html
+++ b/docs/_includes/js/dropdowns.html
@@ -20,7 +20,7 @@
         <div class="collapse navbar-collapse bs-example-js-navbar-collapse">
           <ul class="nav navbar-nav">
             <li class="dropdown">
-              <a id="drop1" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+              <a id="drop1" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
                 Dropdown
                 <span class="caret"></span>
               </a>
@@ -33,7 +33,7 @@
               </ul>
             </li>
             <li class="dropdown">
-              <a id="drop2" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+              <a id="drop2" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
                 Dropdown
                 <span class="caret"></span>
               </a>
@@ -48,7 +48,7 @@
           </ul>
           <ul class="nav navbar-nav navbar-right">
             <li id="fat-menu" class="dropdown">
-              <a id="drop3" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+              <a id="drop3" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
                 Dropdown
                 <span class="caret"></span>
               </a>
@@ -71,7 +71,7 @@
     <ul class="nav nav-pills" role="tablist">
       <li role="presentation" class="active"><a href="#">Regular link</a></li>
       <li role="presentation" class="dropdown">
-        <a id="drop4" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <a id="drop4" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
           Dropdown
           <span class="caret"></span>
         </a>
@@ -84,7 +84,7 @@
         </ul>
       </li>
       <li role="presentation" class="dropdown">
-        <a id="drop5" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <a id="drop5" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
           Dropdown
           <span class="caret"></span>
         </a>
@@ -97,7 +97,7 @@
         </ul>
       </li>
       <li role="presentation" class="dropdown">
-        <a id="drop6" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <a id="drop6" href="#" class="dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
           Dropdown
           <span class="caret"></span>
         </a>
@@ -122,7 +122,7 @@
   <p>Add <code>data-toggle="dropdown"</code> to a link or button to toggle a dropdown.</p>
 {% highlight html %}
 <div class="dropdown">
-  <button id="dLabel" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+  <button id="dLabel" type="button" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
     Dropdown trigger
     <span class="caret"></span>
   </button>
@@ -134,7 +134,7 @@
   <p>To keep URLs intact with link buttons, use the <code>data-target</code> attribute instead of <code>href="#"</code>.</p>
 {% highlight html %}
 <div class="dropdown">
-  <a id="dLabel" data-target="#" href="http://example.com" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+  <a id="dLabel" data-target="#" href="http://example.com" data-toggle="dropdown" aria-haspopup="true" role="button" aria-expanded="false">
     Dropdown trigger
     <span class="caret"></span>
   </a>
diff --git a/docs/_includes/js/scrollspy.html b/docs/_includes/js/scrollspy.html
index 8fa37d87f9..25f5671c4f 100644
--- a/docs/_includes/js/scrollspy.html
+++ b/docs/_includes/js/scrollspy.html
@@ -20,7 +20,7 @@
             <li><a href="#fat">@fat</a></li>
             <li><a href="#mdo">@mdo</a></li>
             <li class="dropdown">
-              <a href="#" id="navbarDrop1" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" id="navbarDrop1" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu" aria-labelledby="navbarDrop1">
                 <li><a href="#one" tabindex="-1">one</a></li>
                 <li><a href="#two" tabindex="-1">two</a></li>
diff --git a/docs/examples/carousel/index.html b/docs/examples/carousel/index.html
index 3d4d3b8365..0bc56ad8f2 100644
--- a/docs/examples/carousel/index.html
+++ b/docs/examples/carousel/index.html
@@ -49,7 +49,7 @@
                 <li><a href="#about">About</a></li>
                 <li><a href="#contact">Contact</a></li>
                 <li class="dropdown">
-                  <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+                  <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
                   <ul class="dropdown-menu" role="menu">
                     <li><a href="#">Action</a></li>
                     <li><a href="#">Another action</a></li>
diff --git a/docs/examples/navbar-fixed-top/index.html b/docs/examples/navbar-fixed-top/index.html
index 30524304e1..4cd4a0b8be 100644
--- a/docs/examples/navbar-fixed-top/index.html
+++ b/docs/examples/navbar-fixed-top/index.html
@@ -47,7 +47,7 @@
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
diff --git a/docs/examples/navbar-static-top/index.html b/docs/examples/navbar-static-top/index.html
index 1ed8dcdb30..05c9e25d5e 100644
--- a/docs/examples/navbar-static-top/index.html
+++ b/docs/examples/navbar-static-top/index.html
@@ -47,7 +47,7 @@
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
diff --git a/docs/examples/navbar/index.html b/docs/examples/navbar/index.html
index f598cebb0d..07fc651f3d 100644
--- a/docs/examples/navbar/index.html
+++ b/docs/examples/navbar/index.html
@@ -49,7 +49,7 @@
               <li><a href="#">About</a></li>
               <li><a href="#">Contact</a></li>
               <li class="dropdown">
-                <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
                 <ul class="dropdown-menu" role="menu">
                   <li><a href="#">Action</a></li>
                   <li><a href="#">Another action</a></li>
diff --git a/docs/examples/non-responsive/index.html b/docs/examples/non-responsive/index.html
index b52c3998a2..4f0b050f9b 100644
--- a/docs/examples/non-responsive/index.html
+++ b/docs/examples/non-responsive/index.html
@@ -49,7 +49,7 @@
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
diff --git a/docs/examples/sticky-footer-navbar/index.html b/docs/examples/sticky-footer-navbar/index.html
index 8afe30532e..526b351359 100644
--- a/docs/examples/sticky-footer-navbar/index.html
+++ b/docs/examples/sticky-footer-navbar/index.html
@@ -47,7 +47,7 @@
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
diff --git a/docs/examples/theme/index.html b/docs/examples/theme/index.html
index 546cbf2d47..9407a0880d 100644
--- a/docs/examples/theme/index.html
+++ b/docs/examples/theme/index.html
@@ -49,7 +49,7 @@
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
             <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
               <ul class="dropdown-menu" role="menu">
                 <li><a href="#">Action</a></li>
                 <li><a href="#">Another action</a></li>
@@ -341,7 +341,7 @@
         <h1>Dropdown menus</h1>
       </div>
       <div class="dropdown theme-dropdown clearfix">
-        <a id="dropdownMenu1" href="#" role="button" class="sr-only dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+        <a id="dropdownMenu1" href="#" class="sr-only dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
         <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
           <li class="active" role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
           <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
@@ -388,7 +388,7 @@
               <li><a href="#about">About</a></li>
               <li><a href="#contact">Contact</a></li>
               <li class="dropdown">
-                <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
                 <ul class="dropdown-menu" role="menu">
                   <li><a href="#">Action</a></li>
                   <li><a href="#">Another action</a></li>
@@ -421,7 +421,7 @@
               <li><a href="#about">About</a></li>
               <li><a href="#contact">Contact</a></li>
               <li class="dropdown">
-                <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
+                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
                 <ul class="dropdown-menu" role="menu">
                   <li><a href="#">Action</a></li>
                   <li><a href="#">Another action</a></li>