diff --git a/requirements.txt b/requirements.txt
index c68b3c9..4c6e305 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 coverage==4.5.1
-cryptography==2.2.2
+cryptography==2.3.1
 Django==2.1
 django-appconf==1.0.2
 django-autoslug==1.9.3
diff --git a/travis_test/requirements.txt b/travis_test/requirements.txt
index cb35403..1fa1f55 100644
--- a/travis_test/requirements.txt
+++ b/travis_test/requirements.txt
@@ -5,7 +5,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 coverage==4.5.1
-cryptography==2.2.2
+cryptography==2.3.1
 Django==2.1
 django-appconf==1.0.2
 django-autoslug==1.9.3