diff --git a/requirements.txt b/requirements.txt
index aa830ca..857382a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pbr>=0.5.21,<1.0
 
 pep8==1.4.5
-pyflakes==0.7.2
+pyflakes>=0.7.2,<0.7.4
 flake8==2.0
 
 six
diff --git a/test-requirements.txt b/test-requirements.txt
index 9ff1689..91a162e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,8 +1,8 @@
 coverage>=3.6
 discover
-fixtures>=0.3.12
+fixtures>=0.3.14
 python-subunit
 sphinx>=1.1.2
 testrepository>=0.0.17
-testscenarios>=0.4,<0.5
+testscenarios>=0.4
 testtools>=0.9.32