diff --git a/lower-constraints.txt b/lower-constraints.txt
index 3babf3a..e1919da 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -7,8 +7,6 @@ decorator==4.2.1
 diskimage-builder==1.1.2
 docutils==0.11
 dulwich==0.19.0
-flake8==2.5.5
-hacking==0.12.0
 idna==2.6
 imagesize==1.0.0
 Jinja2==2.10
@@ -17,8 +15,6 @@ mccabe==0.2.1
 networkx==1.11
 openstackdocstheme==1.31.2
 pbr==2.0.0
-pep8==1.5.7
-pyflakes==0.8.1
 Pygments==2.2.0
 pytz==2018.3
 PyYAML==3.12
diff --git a/test-requirements.txt b/test-requirements.txt
index 0733a62..e12a1a9 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 bashate>=0.5.1 # Apache-2.0
-hacking>=3.0,<3.1.0 # Apache-2.0
+hacking>=3.0.1,<3.1.0 # Apache-2.0
 
 docutils>=0.11 # OSI-Approved Open Source, Public Domain
 sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2  # BSD