diff --git a/requirements-dev.txt b/requirements-dev.txt
index 051c97a..41cf858 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,4 +4,4 @@ pytest-cov==2.5.1
 pytest-timeout==1.2.1
 mock==2.0.0
 faker==0.8.7
-sure==1.4.7
\ No newline at end of file
+sure==1.4.9
\ No newline at end of file