diff --git a/composer.lock b/composer.lock
index 6622a70..cdd574f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3123,33 +3123,29 @@
         },
         {
             "name": "phpspec/prophecy",
-            "version": "v1.7.0",
+            "version": "v1.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "93d39f1f7f9326d746203c7c056f300f7f126073"
+                "reference": "9ca52329bcdd1500de24427542577ebf3fc2f1c9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/93d39f1f7f9326d746203c7c056f300f7f126073",
-                "reference": "93d39f1f7f9326d746203c7c056f300f7f126073",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/9ca52329bcdd1500de24427542577ebf3fc2f1c9",
+                "reference": "9ca52329bcdd1500de24427542577ebf3fc2f1c9",
                 "shasum": ""
             },
             "require": {
-                "doctrine/instantiator": "^1.0.2",
-                "php": "^5.3|^7.0",
-                "phpdocumentor/reflection-docblock": "^2.0|^3.0.2",
-                "sebastian/comparator": "^1.1|^2.0",
-                "sebastian/recursion-context": "^1.0|^2.0|^3.0"
+                "doctrine/instantiator": "~1.0,>=1.0.2",
+                "phpdocumentor/reflection-docblock": "~2.0"
             },
             "require-dev": {
-                "phpspec/phpspec": "^2.5|^3.2",
-                "phpunit/phpunit": "^4.8 || ^5.6.5"
+                "phpspec/phpspec": "~2.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.6.x-dev"
+                    "dev-master": "1.2.x-dev"
                 }
             },
             "autoload": {
@@ -3173,7 +3169,7 @@
                 }
             ],
             "description": "Highly opinionated mocking framework for PHP 5.3+",
-            "homepage": "https://github.com/phpspec/prophecy",
+            "homepage": "http://phpspec.org",
             "keywords": [
                 "Double",
                 "Dummy",
@@ -3182,7 +3178,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2017-03-02T20:05:34+00:00"
+            "time": "2014-11-17T16:23:49+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
diff --git a/core/composer.json b/core/composer.json
index 0d10300..4179e0e 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -45,6 +45,7 @@
         "jcalderonzumba/mink-phantomjs-driver": "^0.3.1",
         "mikey179/vfsStream": "^1.2",
         "phpunit/phpunit": ">=4.8.35 <5",
+        "phpspec/prophecy": "^1.3 <1.4",
         "symfony/css-selector": "^3.2",
         "symfony/phpunit-bridge": "^3.2"
     },