diff --git a/doc/requirements.txt b/doc/requirements.txt
index 687ee144..a5c5dcb9 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,3 +1,6 @@
+# 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.
 openstackdocstheme>=1.18.1 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 reno>=2.5.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index b6b7ad0a..e13637b7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,7 +6,7 @@
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-requests-mock>=1.1.0 # Apache-2.0
+requests-mock>=1.2.0 # Apache-2.0
 mock>=2.0.0 # BSD
 python-openstackclient>=3.12.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0