diff --git a/test-requirements.txt b/test-requirements.txt
index b3af705fbf..0bdd2e8e4d 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 hacking>=1.0.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
-doc8 # Apache-2.0
+doc8>=0.6.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
 Babel!=2.4.0,>=2.3.4 # BSD
@@ -24,7 +24,7 @@ flake8-import-order>=0.13 # LGPLv3
 # Doc requirements
 sphinx>=1.6.2 # BSD
 sphinxcontrib-pecanwsme>=0.8.0 # Apache-2.0
-sphinxcontrib-seqdiag # BSD
+sphinxcontrib-seqdiag>=0.8.4 # BSD
 openstackdocstheme>=1.17.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0