diff --git a/requirements-dev.txt b/requirements-dev.txt
index d559b9585f52e10bcb9cb8c28048f75fb9466974..0077afd5ed1cd129bfea288b879dc45cdb87dc18 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,5 @@
 sphinx
 sphinx_rtd_theme
-mock
 coverage
 pytest
 pytest-cov