diff --git a/requirements.txt b/requirements.txt
index 20d544ca18..f29cd0ef6c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,9 @@
-cloudlib>=0.3.0
-ecdsa>=0.11
-Jinja2<=2.7.2
-MarkupSafe>=0.23
-netaddr>=0.7.12,<=0.7.13
-paramiko>=1.13.0,<=1.15.2
-pexpect>=3.1,<=3.3
-pip>=1.5.6
-PrettyTable>=0.7,<0.8
-pycrypto>=2.6,<=2.6.1
-PyYAML>=3.1.0,<=3.10
-requests>=1.2.1,<=2.2.1,!=2.4.0
-wheel
-wsgiref>=0.1.2
+cloudlib>=0.3.0         # scripts/os-ansible-role-requirements.py
+Jinja2>=2.6             # ansible
+netaddr>=0.7.12         # playbooks/inventory/dynamic_inventory.py
+paramiko>=1.13.0        # ansible
+pip>=6.0
+PrettyTable>=0.7,<0.8   # scripts/inventory-manage.py
+pycrypto>=2.6           # ansible
+PyYAML>=3.1.0           # ansible
+requests>=2.2.0,!=2.4.0 # scripts/os-ansible-role-requirements.py