diff --git a/requirements.txt b/requirements.txt
index b443a749..a1cc1af0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
-mock==1.0.1
 requests==2.2.1
 six>=1.3.0
 websocket-client==0.11.0
diff --git a/requirements3.txt b/requirements3.txt
index b443a749..a1cc1af0 100644
--- a/requirements3.txt
+++ b/requirements3.txt
@@ -1,4 +1,3 @@
-mock==1.0.1
 requests==2.2.1
 six>=1.3.0
 websocket-client==0.11.0
diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 00000000..5857671a
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1 @@
+mock==1.0.1
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
index 7e36c20c..2a0db436 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,9 @@ deps = -r{toxinidir}/requirements.txt
 usedevelop=True
 commands =
     {envpython} tests/test.py
-deps = -r{toxinidir}/requirements3.txt
+deps =
+    -r{toxinidir}/requirements3.txt
+    -r{toxinidir}/test-requirements.txt
 
 [testenv:flake8]
 commands = flake8 docker tests