diff --git a/lower-constraints.txt b/lower-constraints.txt
index dc69f27..4340bd5 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -54,7 +54,6 @@ logilab-common==1.4.2
 Mako==1.0.7
 MarkupSafe==1.1.0
 microversion-parse==0.2.1
-mock==2.0.0
 monotonic==1.5
 mox3==0.26.0
 msgpack==0.6.1
diff --git a/test-requirements.txt b/test-requirements.txt
index 9b3eb86..f3621b2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,6 @@ bashate>=0.5.1 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 pylint==1.4.5 # GPLv2