diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4a50a0d4..b97a9c26 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,3 +1,3 @@
-Cython==0.29
-msgpack==0.5.6
+Cython==0.29.1
+msgpack==0.6.0
 numpy==1.15.4