diff --git a/requirements/requirements-codestyle.txt b/requirements/requirements-codestyle.txt
index 264416f5f..5f37b40ac 100644
--- a/requirements/requirements-codestyle.txt
+++ b/requirements/requirements-codestyle.txt
@@ -1,5 +1,5 @@
 # PEP8 code linting, which we run on all commits.
-flake8==2.4.0
+flake8==3.4.1
 pep8==1.5.7
 
 # Sort and lint imports
diff --git a/requirements/requirements-documentation.txt b/requirements/requirements-documentation.txt
index 81aa70456..012ec99f1 100644
--- a/requirements/requirements-documentation.txt
+++ b/requirements/requirements-documentation.txt
@@ -1,2 +1,2 @@
 # MkDocs to build our documentation.
-mkdocs==0.16.2
+mkdocs==0.16.3
diff --git a/requirements/requirements-optionals.txt b/requirements/requirements-optionals.txt
index 319b7547a..67525bebc 100644
--- a/requirements/requirements-optionals.txt
+++ b/requirements/requirements-optionals.txt
@@ -1,7 +1,7 @@
 # Optional packages which may be used with REST framework.
 pytz==2017.2
 markdown==2.6.4
-django-guardian==1.4.8
+django-guardian==1.4.9
 django-filter==1.0.4
-coreapi==2.2.4
+coreapi==2.3.1
 coreschema==0.0.4
diff --git a/requirements/requirements-packaging.txt b/requirements/requirements-packaging.txt
index f930bfa96..f12d4af0e 100644
--- a/requirements/requirements-packaging.txt
+++ b/requirements/requirements-packaging.txt
@@ -1,8 +1,8 @@
 # Wheel for PyPI installs.
-wheel==0.29.0
+wheel==0.30.0
 
 # Twine for secured PyPI uploads.
-twine==1.6.5
+twine==1.9.1
 
 # Transifex client for managing translation resources.
 transifex-client==0.11