diff --git a/.travis.yml b/.travis.yml
index 83721c2d4..7073c3d0c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,10 +21,6 @@ env:
     - TOX_ENV=py34-django110
 
 matrix:
-    allow_failures:
-        - env: TOX_ENV=py27-django110
-        - env: TOX_ENV=py34-django110
-        - env: TOX_ENV=py35-django110
     fast_finish: true
 
 install:
diff --git a/requirements/requirements-optionals.txt b/requirements/requirements-optionals.txt
index 0ba514c13..241e1951d 100644
--- a/requirements/requirements-optionals.txt
+++ b/requirements/requirements-optionals.txt
@@ -1,4 +1,4 @@
 # Optional packages which may be used with REST framework.
-markdown==2.6.6
-django-guardian==1.4.4
-django-filter==0.10.0
+markdown==2.6.4
+django-guardian==1.4.3
+django-filter==0.13.0