diff --git a/core/menu.js b/core/menu.js
index a1621e83b..fa644b617 100644
--- a/core/menu.js
+++ b/core/menu.js
@@ -18,6 +18,9 @@ goog.require('Blockly.utils.dom');
 goog.require('Blockly.utils.KeyCodes');
 goog.require('Blockly.utils.style');
 
+goog.requireType('Blockly.MenuItem');
+goog.requireType('Blockly.utils.Size');
+
 
 /**
  * A basic menu class.
diff --git a/core/metrics_manager.js b/core/metrics_manager.js
index 004128cbb..a73bf16fa 100644
--- a/core/metrics_manager.js
+++ b/core/metrics_manager.js
@@ -19,6 +19,7 @@ goog.requireType('Blockly.IFlyout');
 goog.requireType('Blockly.IToolbox');
 goog.requireType('Blockly.utils.Metrics');
 goog.requireType('Blockly.utils.toolbox');
+goog.requireType('Blockly.WorkspaceSvg');
 
 
 /**
diff --git a/core/mutator.js b/core/mutator.js
index 86d5bff45..70c0bc111 100644
--- a/core/mutator.js
+++ b/core/mutator.js
@@ -28,7 +28,13 @@ goog.require('Blockly.utils.xml');
 goog.require('Blockly.WorkspaceSvg');
 goog.require('Blockly.Xml');
 
+goog.requireType('Blockly.Block');
+goog.requireType('Blockly.BlockSvg');
+goog.requireType('Blockly.Connection');
+goog.requireType('Blockly.Events.Abstract');
+goog.requireType('Blockly.utils.Coordinate');
 goog.requireType('Blockly.utils.Metrics');
+goog.requireType('Blockly.Workspace');
 
 
 /**
diff --git a/core/names.js b/core/names.js
index 3b73d3f70..4479d7a76 100644
--- a/core/names.js
+++ b/core/names.js
@@ -15,6 +15,8 @@ goog.provide('Blockly.Names');
 goog.require('Blockly.constants');
 goog.require('Blockly.Msg');
 
+goog.requireType('Blockly.VariableMap');
+
 
 /**
  * Class for a database of entity names (variables, functions, etc).
diff --git a/core/procedures.js b/core/procedures.js
index a1b63be92..2fbd13134 100644
--- a/core/procedures.js
+++ b/core/procedures.js
@@ -27,6 +27,10 @@ goog.require('Blockly.utils.xml');
 goog.require('Blockly.Workspace');
 goog.require('Blockly.Xml');
 
+goog.requireType('Blockly.Block');
+goog.requireType('Blockly.Events.Abstract');
+goog.requireType('Blockly.WorkspaceSvg');
+
 
 /**
  * Constant to separate procedure names from variables and generated functions
diff --git a/core/registry.js b/core/registry.js
index 17703991b..61538367a 100644
--- a/core/registry.js
+++ b/core/registry.js
@@ -21,6 +21,11 @@ goog.requireType('Blockly.IFlyout');
 goog.requireType('Blockly.IToolbox');
 goog.requireType('Blockly.Theme');
 
+goog.requireType('Blockly.Cursor');
+goog.requireType('Blockly.MetricsManager');
+goog.requireType('Blockly.Options');
+goog.requireType('Blockly.ToolboxItem');
+
 
 /**
  * A map of maps. With the keys being the type and name of the class we are
diff --git a/core/rendered_connection.js b/core/rendered_connection.js
index 0c070e158..d01dc4bba 100644
--- a/core/rendered_connection.js
+++ b/core/rendered_connection.js
@@ -22,6 +22,10 @@ goog.require('Blockly.utils.dom');
 goog.require('Blockly.utils.object');
 goog.require('Blockly.utils.Svg');
 
+goog.requireType('Blockly.Block');
+goog.requireType('Blockly.BlockSvg');
+goog.requireType('Blockly.ConnectionDB');
+
 
 /**
  * Class for a connection between blocks that may be rendered on screen.