diff --git a/lib/model-helper.js b/lib/model-helper.js
index 5820550..1fafcbd 100644
--- a/lib/model-helper.js
+++ b/lib/model-helper.js
@@ -29,6 +29,19 @@ var modelHelper = module.exports = {
     // Don't modify original properties.
     var properties = _cloneDeep(def.properties);
 
+    var referencedModels = [];
+    // Add models from settings
+    if (def.settings && def.settings.models) {
+      for (var m in def.settings.models) {
+        var model = modelClass[m];
+        if (typeof model === 'function' && model.modelName) {
+          if (referencedModels.indexOf(model) === -1) {
+            referencedModels.push(model);
+          }
+        }
+      }
+    }
+
     // Iterate through each property in the model definition.
     // Types may be defined as constructors (e.g. String, Date, etc.),
     // or as strings; getPropType() will take care of the conversion.
@@ -56,6 +69,21 @@ var modelHelper = module.exports = {
 
       // Assign this back to the properties object.
       properties[key] = prop;
+
+      var propType = def.properties[key].type;
+      if (typeof propType === 'function' && propType.modelName) {
+        if (referencedModels.indexOf(propType) === -1) {
+          referencedModels.push(propType);
+        }
+      }
+      if (Array.isArray(propType) && propType.length) {
+        var itemType = propType[0];
+        if (typeof itemType === 'function' && itemType.modelName) {
+          if (referencedModels.indexOf(itemType) === -1) {
+            referencedModels.push(itemType);
+          }
+        }
+      }
     });
 
     out[name] = {
@@ -74,6 +102,9 @@ var modelHelper = module.exports = {
         generateModelDefinition(rel.modelThrough, out);
       }
     }
+    for(var rm in referencedModels) {
+      generateModelDefinition(referencedModels[rm], out);
+    }
     return out;
   },
 
diff --git a/package.json b/package.json
index abe35aa..9bef826 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "loopback-explorer",
-  "version": "1.2.9",
+  "version": "1.2.10",
   "description": "Browse and test your LoopBack app's APIs",
   "main": "index.js",
   "scripts": {
diff --git a/test/model-helper.test.js b/test/model-helper.test.js
index e376a2a..efe720a 100644
--- a/test/model-helper.test.js
+++ b/test/model-helper.test.js
@@ -123,15 +123,49 @@ describe('model-helper', function() {
 
     });
   });
+
   describe('related models', function() {
-    it('should include related models', function() {
+    it('should include related models', function () {
       var defs = buildSwaggerModelsWithRelations({
         str: String // 'string'
       });
       expect(defs).has.property('testModel');
       expect(defs).has.property('relatedModel');
     });
+
+    it('should include nesting models', function() {
+      var Model2 = loopback.createModel('Model2', {street: String});
+      var Model1 = loopback.createModel('Model1', {
+        str: String, // 'string'
+        address: Model2
+      });
+      var defs = modelHelper.generateModelDefinition(Model1, {});
+      expect(defs).has.property('Model1');
+      expect(defs).has.property('Model2');
+    });
+
+    it('should include used models', function() {
+      var Model4 = loopback.createModel('Model4', {street: String});
+      var Model3 = loopback.createModel('Model3', {
+        str: String, // 'string'
+      }, {models: {model4: 'Model4'}});
+      var defs = modelHelper.generateModelDefinition(Model3, {});
+      expect(defs).has.property('Model3');
+      expect(defs).has.property('Model4');
+    });
+
+    it('should include nesting models in array', function() {
+      var Model6 = loopback.createModel('Model6', {street: String});
+      var Model5 = loopback.createModel('Model5', {
+        str: String, // 'string'
+        addresses: [Model6]
+      });
+      var defs = modelHelper.generateModelDefinition(Model5, {});
+      expect(defs).has.property('Model5');
+      expect(defs).has.property('Model6');
+    });
   });
+
   describe('hidden properties', function() {
     it('should hide properties marked as "hidden"', function() {
       var aClass = createModelCtor({