diff --git a/lower-constraints.txt b/lower-constraints.txt
index b504edccea..74e86fa924 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -22,7 +22,7 @@ debtcollector==1.19.0
 decorator==4.2.1
 deprecation==2.0
 diskimage-builder==1.1.2
-doc8==0.6.0
+doc8==0.8.1
 docutils==0.14
 docker==4.2.0
 dogpile.cache==0.6.5
diff --git a/test-requirements.txt b/test-requirements.txt
index 3b90a3fa25..ba437f3365 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -18,7 +18,7 @@ redis>=2.10.0 # MIT
 cassandra-driver!=3.6.0,>=2.1.4 # Apache-2.0
 couchdb>=0.8 # Apache-2.0
 stestr>=1.1.0 # Apache-2.0
-doc8>=0.6.0 # Apache-2.0
+doc8>=0.8.1 # Apache-2.0
 astroid==1.6.5 # LGPLv2.1
 pylint==1.9.2 # GPLv2
 oslotest>=3.2.0 # Apache-2.0