diff --git a/test-requirements.txt b/test-requirements.txt
index 721951944..6dd5257b8 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,12 +1,19 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-pbr>=1.6
-openstack-doc-tools>=1.0.0
-doc8  # Apache-2.0
+pbr>=1.6 # Apache-2.0
+
+openstack-doc-tools>=1.1.0 # Apache-2.0
+doc8 # Apache-2.0
 Pygments
-# At least 1.3 is required for dedent in code blocks. Capped to 1.3 to not get an automatic update to any newer versions.
-sphinx>=1.3,!=1.3b1,<1.4
-openstackdocstheme>=1.5.0
+
+# At least 1.3 is required for dedent in code blocks. Capped to 1.3 to
+# not get an automatic update to any newer versions.
+sphinx>=1.3,!=1.3b1,<1.4 # BSD
+
+openstackdocstheme>=1.5.0 # Apache-2.0
 nwdiag
 sphinxcontrib-nwdiag
+
+# For translations
+Babel>=2.3.4  # BSD