diff --git a/lower-constraints.txt b/lower-constraints.txt
index a02a1c7..9db1065 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -9,8 +9,8 @@ coverage==4.0
 debtcollector==1.2.0
 decorator==3.4.0
 deprecation==1.0
-doc8==0.6.0
-docutils==0.11
+doc8==0.8.1
+docutils==0.12
 dogpile.cache==0.6.2
 dulwich==0.15.0
 extras==1.0.0
@@ -27,7 +27,7 @@ jsonpointer==1.13
 keystoneauth1==3.4.0
 linecache2==1.0.0
 MarkupSafe==1.0
-mccabe==0.2.1
+mccabe==0.6.0
 monotonic==0.6
 mox3==0.20.0
 msgpack-python==0.4.0
@@ -46,7 +46,7 @@ oslo.utils==3.33.0
 oslotest==3.2.0
 pbr==2.0.0
 prettytable==0.7.2
-pyflakes==0.8.1
+pyflakes==2.1.0
 Pygments==2.2.0
 pyparsing==2.1.0
 pyperclip==1.5.27
diff --git a/test-requirements.txt b/test-requirements.txt
index e4cd8aa..2c1f0e2 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -12,7 +12,7 @@ testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 
 # documentation
-doc8>=0.6.0 # Apache-2.0
+doc8>=0.8.1 # Apache-2.0
 sphinx>=2.0.0,!=2.1.0 # BSD
 reno>=3.1.0 # Apache-2.0
 openstackdocstheme>=2.2.1 # Apache-2.0