.requirements.diff

diff --git i/requirements.txt w/requirements.txt
index 4dbebb6..ab3f6d1 100644
--- i/requirements.txt
+++ w/requirements.txt
@@ -2,6 +2,6 @@
 # This file is autogenerated by pip-compile
 # Make changes in requirements.in, then run this to update:
 #
-#    pip-compile requirements.in
+#    pip-compile --no-index requirements.in
 #
 future==0.15.2
diff --git i/requirements_dev.txt w/requirements_dev.txt
index 4d8dc9b..57e4d83 100644
--- i/requirements_dev.txt
+++ w/requirements_dev.txt
@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile
 # Make changes in requirements_dev.in, then run this to update:
 #
-#    pip-compile requirements_dev.in
+#    pip-compile --no-index requirements_dev.in
 #
 alabaster==0.7.7          # via sphinx
 apipkg==1.4               # via execnet