diff --git a/requirements/requirements-optionals.txt b/requirements/requirements-optionals.txt
index 42f1205af..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==2.6.4
-django-guardian==1.3.2
-django-filter==0.10.0
+django-guardian==1.4.3
+django-filter==0.13.0
diff --git a/requirements/requirements-testing.txt b/requirements/requirements-testing.txt
index caa58765a..177d677d8 100644
--- a/requirements/requirements-testing.txt
+++ b/requirements/requirements-testing.txt
@@ -1,4 +1,4 @@
 # PyTest for running the tests.
-pytest==2.8.5
+pytest==2.9.1
 pytest-django==2.9.1
 pytest-cov==1.8.1