diff --git a/requirements.txt b/requirements.txt
index 76b174ac..d26b7620 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,16 +1,18 @@
-fxos-appgen >= 0.11
+fxos-appgen == 0.13
 gaiatest == 0.26
 marionette_client == 0.7.10
-marionette_extension >= 0.4.7
-mozdevice >= 0.41
-mozlog >= 2.1
-moznetwork >= 0.24
-mozprocess >= 0.18
-mozprofile >= 0.21
-mozrunner >= 6.1
-moztest >= 0.6
+marionette_extension == 0.4.8
+mozdevice == 0.45
+mozlog == 2.11
+moznetwork == 0.26
+mozprocess == 0.22
+mozprofile == 0.24
+mozrunner == 6.7
+moztest == 0.7
+mozcrash == 0.14
+mozversion == 1.2
 py == 1.4.20
 sphinx
-tornado >= 3.2
-wptrunner >= 1.4
-wptserve >= 1.0.1
+tornado == 4.2
+wptrunner == 1.14
+wptserve == 1.3.0