diff --git a/lower-constraints.txt b/lower-constraints.txt
index 29dcb94b4..bfb8ebb3a 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -25,13 +25,11 @@ eventlet==0.18.2
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
-flake8==3.7.9
 future==0.16.0
 futurist==1.6.0
 gitdb2==2.0.3
 GitPython==2.1.8
 greenlet==0.4.13
-hacking==2.0.0
 idna==2.6
 iso8601==0.1.12
 Jinja2==2.10
@@ -89,7 +87,6 @@ pyasn1==0.4.2
 pycadf==2.7.0
 pycparser==2.18
 pycodestyle==2.5.0
-pyflakes==1.0.0
 pyinotify==0.9.6
 PyMySQL==0.7.6
 PyNaCl==1.2.1
diff --git a/test-requirements.txt b/test-requirements.txt
index d5aa60621..081b1135b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 # Hacking already pins down pep8, pyflakes and flake8
-hacking>=3.0,<4.0.0 # Apache-2.0
+hacking>=3.0.1,<3.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0