diff --git a/package.json b/package.json
index a71fca8e225..2d2de00c2c6 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,6 @@
   "homepage": "https://github.com/apollostack/apollo-proxy#readme",
   "dependencies": {
     "babel-polyfill": "^6.5.0",
-    "casual-browserify": "^1.5.2",
     "express-graphql": "^0.5.1",
     "fs": "0.0.2",
     "graphql": "^0.5.0",
diff --git a/src/mock.js b/src/mock.js
index 8968db1778d..45bd67e7000 100644
--- a/src/mock.js
+++ b/src/mock.js
@@ -7,7 +7,6 @@ import {
   getNullableType,
   getNamedType,
 } from 'graphql/type';
-import casual from 'casual-browserify';
 import { graphql } from 'graphql';
 import uuid from 'node-uuid';
 import { forEachField, buildSchemaFromTypeDefinitions } from './schemaGenerator';
@@ -52,16 +51,22 @@ function addMockFunctionsToSchema({ schema, mocks = {}, preserveResolvers = fals
   });
 
   const defaultMockMap = new Map();
-  defaultMockMap.set('Int', () => casual.integer());
-  defaultMockMap.set('Float', () => casual.double());
-  defaultMockMap.set('String', () => casual.words(2));
-  defaultMockMap.set('Boolean', () => casual.coin_flip);
+  defaultMockMap.set('Int', () => Math.round(Math.random * 200) - 100);
+  defaultMockMap.set('Float', () => Math.random * 200 - 100);
+  defaultMockMap.set('String', () => 'Hello World');
+  defaultMockMap.set('Boolean', () => Math.random > 0.5);
   defaultMockMap.set('ID', () => uuid.v4());
 
   function mergeObjects(a, b) {
     return Object.assign(a, b);
   }
 
+  // returns a random element from that ary
+  function getRandomElement(ary) {
+    const sample = Math.floor(Math.random() * ary.length);
+    return ary[sample];
+  }
+
   // takes either an object or a (possibly nested) array
   // and completes the customMock object with any fields
   // defined on genericMock
@@ -129,10 +134,10 @@ function addMockFunctionsToSchema({ schema, mocks = {}, preserveResolvers = fals
       if (fieldType instanceof GraphQLUnionType) {
         // TODO: if a union type doesn't implement resolveType, we could overwrite
         // it with a default that works with what's below.
-        return { typename: casual.random_element(fieldType.getTypes()) };
+        return { typename: getRandomElement(fieldType.getTypes()) };
       }
       if (fieldType instanceof GraphQLEnumType) {
-        return casual.random_element(fieldType.getValues()).value;
+        return getRandomElement(fieldType.getValues()).value;
       }
       if (defaultMockMap.has(fieldType.name)) {
         return defaultMockMap.get(fieldType.name)(o, a, c, r);