HOT-FIX: security vulnerabilities

requirements/requirements.txt

@@ -1,6 +1,6 @@
 dj-database-url==0.4.1
 django-haystack==2.6.0
-django>=1.10,<1.11
+django>=1.11.11
 git+git://github.com/rubgombar1/django-admin-bootstrapped.git
 django-bootstrap3==7.0.1
 django-bower==5.2.0
@@ -22,7 +22,7 @@ libsass==0.11.1
 psycopg2-binary==2.7.4
 python-decouple==3.0
 pytz==2016.4
-pyyaml==3.11
+pyyaml==4.2b1
 rtyaml==0.0.3
 textract==1.5.0
 unipath==1.1