diff --git a/requirements-tests.txt b/requirements-tests.txt
index ff7ec4c..949ed3e 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -1,4 +1,4 @@
-pytest
-pytest-cov
-pytest-pep8
-pytest-sugar
+pytest==3.0.3
+pytest-cov==2.4.0
+pytest-pep8==1.0.6
+pytest-sugar==0.7.1