diff --git a/alacritty_config_gui.py b/alacritty_config_gui.py
index 9c81b80..dde3fe7 100644
--- a/alacritty_config_gui.py
+++ b/alacritty_config_gui.py
@@ -259,11 +259,72 @@ class KeyBindingDialog(QtWidgets.QDialog):
         self.accept()
 
 
-class KeyBindingsWidget(QtWidgets.QWidget):
-    def __init__(self, key_bindings):
+class MouseBindingDialog(QtWidgets.QDialog):
+    action_options = ([
+        "Copy", "Paste", "PasteSelection", "IncreaseFontSize", "DecreaseFontSize",
+        "ResetFontSize", "ScrollPageUp", "ScrollPageDown", "ScrollLineUp",
+        "ScrollLineDown", "ScrollToTop", "ScrollToBottom", "ClearHistory", "Hide",
+        "Quit", "ToggleFullscreen", "SpawnNewInstance", "ClearLogNotice", "None",
+    ] + (['ToggleSimpleFullscreen'] if platform.system() == 'Darwin' else []))
+
+    modifier_options = ["Command", "Control", "Option", "Super", "Shift", "Alt"]
+
+    mouse_options = [
+        'Middle', 'Left', 'Right', '1', '2', '3', '4', '5', '6', '7', '8', '9'
+    ]
+
+    def __init__(self):
+        super().__init__()
+        self.result = {}
+        self.layout = QtWidgets.QFormLayout()
+        self.layout.setFieldGrowthPolicy(
+            QtWidgets.QFormLayout.AllNonFixedFieldsGrow
+        )
+
+        self.mouse = QtWidgets.QComboBox()
+        for option in self.mouse_options:
+            self.mouse.addItem(option)
+        self.layout.addRow(QtWidgets.QLabel('Mouse'), self.mouse)
+
+        self.mods = QtWidgets.QListWidget()
+        for option in self.modifier_options:
+            self.mods.addItem(option)
+        self.mods.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection)
+        self.layout.addRow(QtWidgets.QLabel('Mods'), self.mods)
+
+        self.action = QtWidgets.QComboBox()
+        for option in self.action_options:
+            self.action.addItem(option)
+        self.layout.addRow(QtWidgets.QLabel('Action'), self.action)
+
+        buttons = QtWidgets.QDialogButtonBox()
+        buttons.addButton(buttons.Ok)
+        buttons.addButton(buttons.Cancel)
+        buttons.accepted.connect(self.do_accept)
+        buttons.rejected.connect(self.reject)
+        self.layout.addWidget(buttons)
+
+        self.setLayout(self.layout)
+
+    def do_accept(self):
+        mouse = self.mouse.currentText()
+        # TODO: this is an ugly heuristic. should we parse yaml here?
+        self.result['mouse'] = int(mouse) if mouse.isdigit() else mouse
+
+        mods = self.mods.selectedItems()
+        if len(mods):
+            self.result['mods'] = '|'.join(mod.text() for mod in mods)
+
+        self.result['action'] = self.action.currentText()
+
+        self.accept()
+
+
+class MultiListWidget(QtWidgets.QWidget):
+    def __init__(self, elems):
         super().__init__()
-        self.key_bindings = key_bindings
         self.lst = None
+        self.elems = elems
         self.init()
 
     def init(self):
@@ -286,7 +347,7 @@ class KeyBindingsWidget(QtWidgets.QWidget):
     def update(self):
         if self.lst:
             self.lst.setParent(None)
-        self.lst = QtWidgets.QTableWidget(len(self.key_bindings), 2)
+        self.lst = QtWidgets.QTableWidget(len(self.elems), 2)
         self.lst.setShowGrid(False)
         horizontal_header = self.lst.horizontalHeader()
         horizontal_header.setVisible(False)
@@ -296,18 +357,18 @@ class KeyBindingsWidget(QtWidgets.QWidget):
         self.lst.verticalHeader().setVisible(False)
         self.lst.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
         self.lst.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
-        for i, binding in enumerate(self.key_bindings):
+        for i, binding in enumerate(self.elems):
             key, action = self.itemize(binding)
             self.lst.setItem(i, 0, QtWidgets.QTableWidgetItem(key))
             self.lst.setItem(i, 1, QtWidgets.QTableWidgetItem(action))
         self.layout.insertWidget(0, self.lst)
 
     def open_dialog(self):
-        dialog = KeyBindingDialog()
+        dialog = self.dialog()
 
         if dialog.exec() == QtWidgets.QDialog.Accepted:
             key_binding = dialog.result
-            self.key_bindings.append(key_binding)
+            self.elems.append(key_binding)
             self.update()
 
     def delete_selected(self):
@@ -316,9 +377,18 @@ class KeyBindingsWidget(QtWidgets.QWidget):
             to_delete.add(i.row())
 
         for i in sorted(to_delete, reverse=True):
-            del self.key_bindings[i]
+            del self.elems[i]
         self.update()
 
+    def value(self):
+        return self.elems
+
+
+class KeyBindingsWidget(MultiListWidget):
+    def __init__(self, *args):
+        super().__init__(*args)
+        self.dialog = KeyBindingDialog
+
     def itemize(self, binding):
         key = binding['key']
 
@@ -337,8 +407,22 @@ class KeyBindingsWidget(QtWidgets.QWidget):
             action = 'chars({})'.format(chars)
         return key, action
 
-    def value(self):
-        return self.key_bindings
+
+class MouseBindingsWidget(MultiListWidget):
+    def __init__(self, *args):
+        super().__init__(*args)
+        self.dialog = MouseBindingDialog
+
+    def itemize(self, binding):
+        key = binding['mouse']
+
+        mods = binding.get('mods')
+        if mods:
+            key = '{} {}'.format(' '.join(mods.split('|')), key)
+
+        action = binding.get('action')
+
+        return key, action
 
 
 class ConfigWidget(QtWidgets.QWidget):
@@ -699,10 +783,23 @@ class KeyBindings(ConfigWidget):
     def __init__(self, config):
         super().__init__()
 
-        keybindings = KeyBindingsWidget(config)
+        key_bindings = KeyBindingsWidget(config)
 
         self.widgets = {
-            '': keybindings,
+            '': key_bindings,
+        }
+
+        self.render_state()
+
+
+class MouseBindings(ConfigWidget):
+    def __init__(self, config):
+        super().__init__()
+
+        mouse_bindings = MouseBindingsWidget(config)
+
+        self.widgets = {
+            '': mouse_bindings,
         }
 
         self.render_state()
@@ -734,6 +831,9 @@ class Config(QtWidgets.QWidget):
         self.tabs.addTab(
             KeyBindings(self.config.get('key_bindings', [])), "Key Bindings"
         )
+        self.tabs.addTab(
+            MouseBindings(self.config.get('mouse_bindings', [])), "Mouse Bindings"
+        )
 
         self.layout.addWidget(self.tabs)