diff --git a/webserver/server.py b/webserver/server.py
index bffb7ef..2d5bf71 100755
--- a/webserver/server.py
+++ b/webserver/server.py
@@ -157,6 +157,10 @@ def build(msg):
 
     symbol = symbolify(symbol)
 
+    if buildtype == 'hvcc':
+        midi_in = msg.get('midi_in')
+        midi_out = msg.get('midi_out')
+
     if category == '(none)':
         category = 'lv2:Plugin'
     else:
@@ -286,8 +290,8 @@ def build(msg):
         "license": "ISC",\
         "lv2_info": "{category}",\
         "maker": "{brand}",\
-        "midi_input": 0,\
-        "midi_output": 0,\
+        "midi_input": {1 if midi_in else 0},\
+        "midi_output": {1 if midi_out else 0},\
         "plugin_uri": "urn:hvcc:{symbol}",\
         "plugin_formats ":["lv2_sep"],\
         "version": "0, 0, 0"\
diff --git a/webserver/templates/builder.html b/webserver/templates/builder.html
index 3d1bc03..0dc177e 100644
--- a/webserver/templates/builder.html
+++ b/webserver/templates/builder.html
@@ -175,6 +175,8 @@
             brand: $('#brand').val(),
             symbol: $('#symbol').val(),
             category: $('#category').val(),
+            midi_in: $('#midi_in').is(":checked"),
+            midi_out: $('#midi_out').is(":checked")
         };
         var numFilesRead = 0;
         for (var i=0; i<files.length; ++i) {
@@ -253,6 +255,16 @@ <h2>Plugin settings</h2>
                             {% endfor %}
                         </select>
                     </div>
+                {% if buildertype == 'hvcc' %}
+                    <div class="mb-3 form-group form-check">
+                        <label for="midi_in" class="form-check-label">Midi Input</label>
+                        <input class="form-check-input" type="checkbox" name="midi_in" value="" id="midi_in">
+                    </div>
+                    <div class="mb-3 form-group form-check">
+                        <label for="midi_out" class="form-check-label">Midi Output</label>
+                        <input class="form-check-input" type="checkbox" name="midi_out" value="" id="midi_out">
+                    </div>
+                {% endif %}
                     <!--
                     <div class="mb-3 form-group form-check">
                         <input class="form-check-input" type="checkbox" value="" id="save-settings">