diff --git a/requirements-dev.txt b/requirements-dev.txt
index c4e5bb4..5262598 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -11,10 +11,11 @@ coverage==4.5.4
 execnet==1.7.1
 factory-boy==2.11.1
 Faker==0.8.18
+filelock==3.0.12
 funcsigs==1.0.2
 ipaddress==1.0.22
 mock==2.0.0
-packaging==19.1
+packaging==19.2
 pbr==5.4.3
 pluggy==0.13.0
 pur==5.2.2
@@ -27,4 +28,7 @@ pytest-forked==0.2
 pytest-xdist==1.25.0
 python-dateutil==2.8.0
 text-unidecode==1.2
+toml==0.10.0
+tox==3.14.0
+virtualenv==16.7.5
 wcwidth==0.1.7
diff --git a/requirements.txt b/requirements.txt
index 9e299e6..517f019 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -72,6 +72,6 @@ social-auth-core==3.2.0
 unicode-slugify==0.1.3
 Unidecode==1.1.1
 Unipath==1.1
-urllib3==1.25.3
+urllib3==1.25.6
 vine==1.3.0
 zipp==0.6.0
diff --git a/setup.cfg b/setup.cfg
index 37e666c..3bc682a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -73,6 +73,7 @@ dev =
     Faker~=0.8.0
     factory-boy~=2.11.0
     pur~=5.2.0
+    tox~=3.14.0
 
 [flake8]
 max-complexity = 25