diff --git a/lower-constraints.txt b/lower-constraints.txt
index 26c5800..1abd292 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -7,9 +7,7 @@ docutils==0.11
 dulwich==0.15.0
 extras==1.0.0
 fixtures==3.0.0
-flake8==2.2.4
 flake8-docstrings==0.2.1.post1
-hacking==0.10.3
 imagesize==0.7.1
 iso8601==0.1.11
 Jinja2==2.10
@@ -31,8 +29,6 @@ oslo.utils==3.33.0
 oslotest==3.2.0
 pbr==2.0.0
 pep257==0.7.0
-pep8==1.5.7
-pyflakes==0.8.1
 Pygments==2.2.0
 pyparsing==2.1.0
 python-mimeparse==1.6.0
diff --git a/test-requirements.txt b/test-requirements.txt
index c48413d..0d0f7f6 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 # Hacking already pins down pep8, pyflakes and flake8
-hacking>=3.0,<3.1.0 # Apache-2.0
+hacking>=3.0.1,<3.1.0 # Apache-2.0
 flake8-docstrings==0.2.1.post1 # MIT
 
 coverage!=4.4,>=4.0 # Apache-2.0