diff --git a/.travis.yml b/.travis.yml
index 1975b26..b7b5b14 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,17 +1,30 @@
 language: python
 python:
   - 3.5
-env:
-  - TOX_ENV=py26
-  - TOX_ENV=py27
-  - TOX_ENV=py32
-  - TOX_ENV=py33
-  - TOX_ENV=py34
-  - TOX_ENV=py35
-  - TOX_ENV=pypy
-  - TOX_ENV=pypy3
-  - JYTHON=true
+matrix:
+  fast_finish: true
+  include:
+    - python: 3.5
+      env: TOX_ENV=py35
+    - python: 3.4
+      env: TOX_ENV=py34
+    - python: 3.3
+      env: TOX_ENV=py33
+    - python: 3.2
+      env: TOX_ENV=py32
+    - python: 2.7
+      env: TOX_ENV=py27
+    - python: 2.6
+      env: TOX_ENV=py26
+    - python: pypy
+      env: TOX_ENV=pypy
+    - python: pypy3
+      env: TOX_ENV=pypy3
+    - python: 3.5
+      env: $JYTHON=true
 install:
+  - if [ $TOX_ENV = "py32" ]; then travis_retry pip install "virtualenv<14.0.0" "tox<1.8.0"; fi
+  - if [ $TOX_ENV = "pypy3" ]; then travis_retry pip install "virtualenv<14.0.0" "tox<1.8.0"; fi
   - if [ -z "$JYTHON" ]; then pip install codecov; fi
   - if [ "$TOX_ENV" ]; then travis_retry pip install "virtualenv<14.0.0" tox; fi
 before_install:
@@ -22,4 +35,4 @@ script:
   - if [ "$JYTHON" ]; then travis_retry jython setup.py test; fi
   - if [ "$TOX_ENV" ]; then tox -e $TOX_ENV; fi
 after_success:
-  - codecov
\ No newline at end of file
+  - codecov
diff --git a/pyanyapi/interfaces.py b/pyanyapi/interfaces.py
index 698c637..c0914b2 100644
--- a/pyanyapi/interfaces.py
+++ b/pyanyapi/interfaces.py
@@ -274,7 +274,7 @@ class YAMLInterface(DictInterface):
 
     def perform_parsing(self):
         try:
-            return yaml.load(self.content)
+            return yaml.safe_load(self.content)
         except yaml.error.YAMLError:
             raise ResponseParseError(self._error_message, self.content)
 
diff --git a/tests/test_parsers.py b/tests/test_parsers.py
index 38223e2..4958b21 100644
--- a/tests/test_parsers.py
+++ b/tests/test_parsers.py
@@ -63,6 +63,15 @@ def test_yaml_parser_error():
         parsed.test
 
 
+def test_yaml_parser_vulnerability():
+    """
+    In case of usage of yaml.load `test` value will be equal to 0.
+    """
+    parsed = YAMLParser({'test': 'container > test'}).parse('!!python/object/apply:os.system ["exit 0"]')
+    with pytest.raises(ResponseParseError):
+        parsed.test
+
+
 @lxml_is_supported
 @pytest.mark.parametrize(
     'settings', (