diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ced94fe4..f4c81fa90 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,17 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+<a name="4.13.4"></a>
+## [4.13.4](https://github.com/gemini-testing/gemini/compare/v4.13.3...v4.13.4) (2016-11-07)
+
+
+### Bug Fixes
+
+* **config:** throw error if value contain not valid json string ([60cc4f0](https://github.com/gemini-testing/gemini/commit/60cc4f0))
+* **config:** use JSON.parse for plugins values from cli/env ([6039fd1](https://github.com/gemini-testing/gemini/commit/6039fd1))
+
+
+
 <a name="4.13.3"></a>
 ## [4.13.3](https://github.com/gemini-testing/gemini/compare/v4.13.1...v4.13.3) (2016-11-03)
 
diff --git a/lib/config/util.js b/lib/config/util.js
index 18d6bb1cf..2ad5f17c8 100644
--- a/lib/config/util.js
+++ b/lib/config/util.js
@@ -48,6 +48,14 @@ function parseBoolean(value) {
     }
 }
 
+function parsePrimitive(str) {
+    try {
+        return JSON.parse(str);
+    } catch (error) {
+        throw new GeminiError('a value must be a primitive type');
+    }
+}
+
 function positiveIntegerOption(defaultValue) {
     return option({
         parseEnv: Number,
@@ -70,7 +78,10 @@ function positiveIntegerOption(defaultValue) {
 }
 
 function anyObject() {
-    return map(option({}));
+    return map(option({
+        parseEnv: parsePrimitive,
+        parseCli: parsePrimitive
+    }));
 }
 
 exports.is = is;
diff --git a/package.json b/package.json
index 7e9c191c0..ff3d9583a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gemini",
-  "version": "4.13.3",
+  "version": "4.13.4",
   "description": "UI Screenshot testing utility",
   "engines": {
     "node": ">= 4.0.0"
diff --git a/test/unit/config-options/config-options.test.js b/test/unit/config-options/config-options.test.js
index 8579fa357..f1e2386ab 100644
--- a/test/unit/config-options/config-options.test.js
+++ b/test/unit/config-options/config-options.test.js
@@ -8,7 +8,10 @@ var Config = require('lib/config'),
 describe('config', function() {
     var VALID_OPTIONS = {
         system: {
-            projectRoot: '/some/path'
+            projectRoot: '/some/path',
+            plugins: {
+                plugin: {}
+            }
         },
         rootUrl: 'http://example.com/root',
         gridUrl: 'http://example.com/root',
@@ -225,6 +228,38 @@ describe('config', function() {
         });
     }
 
+    function testObjectOption(name) {
+        it('should parse any of primitive type from environment', () => {
+            ['string', 1.0, 1, false, null, [], {a: 1}].forEach((expected) => {
+                const value = JSON.stringify(expected);
+                assertParsesEnv({property: name, value, expected});
+            });
+        });
+
+        it('should throw if value from environment is not valid', () => {
+            ['{a:1}', '{', ']', '\'string\'', '\n'].forEach((value) => {
+                assert.throw(() => {
+                    assertParsesEnv({property: name, value});
+                }, GeminiError);
+            });
+        });
+
+        it('should parse any of primitive type from cli', () => {
+            ['string', 1.0, 1, false, null, [], {a: 1}].forEach((expected) => {
+                const value = JSON.stringify(expected);
+                assertParsesCli({property: name, value, expected});
+            });
+        });
+
+        it('should throw if value from cli is not valid', () => {
+            ['{a:1}', '{', ']', '\'string\'', '\n'].forEach((value) => {
+                assert.throw(() => {
+                    assertParsesCli({property: name, value});
+                }, GeminiError);
+            });
+        });
+    }
+
     beforeEach(function() {
         this.sinon = sinon.sandbox.create();
     });
@@ -439,6 +474,10 @@ describe('config', function() {
                 });
             });
         });
+
+        describe('plugins', () => {
+            testObjectOption('system.plugins.plugin');
+        });
     });
 
     describe('browser options', function() {