diff --git a/requirements_dev.txt b/requirements_dev.txt
index a029353..8c2892f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,14 +1,14 @@
 alabaster==0.7.10
 argh==0.26.2
-arrow==0.12.0
+arrow==0.12.1
 asn1crypto==0.24.0
-Babel==2.5.1
+Babel==2.5.3
 beautifulsoup4==4.6.0
 binaryornot==0.4.4
 bs4==0.0.1
 bumpversion==0.5.3
-certifi==2017.11.5
-cffi==1.11.2
+certifi==2018.1.18
+cffi==1.11.4
 chardet==3.0.4
 click==6.7
 cookiecutter==1.6.0
@@ -42,10 +42,10 @@ requests==2.18.4
 requests-toolbelt==0.8.0
 six==1.11.0
 snowballstemmer==1.2.1
-Sphinx==1.6.5
+Sphinx==1.6.6
 sphinxcontrib-websupport==1.0.1
 tabulate==0.8.2
-texttable==1.1.1
+texttable==1.2.1
 tox==2.9.1
 tqdm==4.19.5
 twine==1.9.1