diff --git a/requirements-dev.txt b/requirements-dev.txt
index b71ae2ba..2c0d9d2c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 -r requirements.txt
 pytest==3.1.3
-pytest-mock
-sphinx==1.6.3
+pytest-mock==1.6.2
+sphinx==1.6.3
\ No newline at end of file