diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3e85d58..63d885b 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
 docutils==0.14
-Pygments==2.2.0
-Sphinx==1.8.1
+Pygments==2.3.0
+Sphinx==1.8.2
 sphinxcontrib-websupport==1.1.0
diff --git a/tests/requirements.txt b/tests/requirements.txt
index f3e0c23..6b59270 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,13 +1,13 @@
 attrs==18.2.0
 black==18.9b0
-coverage==4.5.1
+coverage==4.5.2
 flake8==3.6.0
 isort==4.3.4
 mypy==0.641
 pycodestyle==2.4.0
 pyflakes==2.0.0
-pytest==3.9.3
+pytest==4.0.1
 pytest-cov==2.6.0
 pytest-isort==0.2.1
 pytest-mock==1.10.0
-pytest-sugar==0.9.1
+pytest-sugar==0.9.2