diff --git a/test-requirements.txt b/test-requirements.txt
index 6c3322acbf..d9db89f107 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,7 +1,7 @@
-coverage
-pylint
-pep8
-lettuce
-selenium
-splinter
+coverage==3.6
+pylint==0.27.0
+pep8==1.4.5
+lettuce==0.2.15
+selenium==2.31.0
+splinter==0.5.0