diff --git a/setup.py b/setup.py
index cf61f1007..40322f4a3 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
     'version': '0.19.0',
     'packages': ['rosdep2', 'rosdep2.ament_packages', 'rosdep2.platforms'],
     'package_dir': {'': 'src'},
-    'install_requires': ['catkin_pkg >= 0.4.0', 'rospkg >= 1.1.10', 'rosdistro >= 0.7.5', 'PyYAML >= 3.1'],
+    'install_requires': ['catkin_pkg >= 0.4.0', 'rospkg >= 1.2.7', 'rosdistro >= 0.7.5', 'PyYAML >= 3.1'],
     'test_suite': 'nose.collector',
     'test_requires': ['mock', 'nose >= 1.0'],
     'author': 'Tully Foote, Ken Conley',
diff --git a/src/rosdep2/platforms/debian.py b/src/rosdep2/platforms/debian.py
index 7ca26c123..e5598c7c4 100644
--- a/src/rosdep2/platforms/debian.py
+++ b/src/rosdep2/platforms/debian.py
@@ -31,8 +31,16 @@
 import subprocess
 import sys
 
-from rospkg.os_detect import OS_DEBIAN, OS_LINARO, OS_UBUNTU, OS_ELEMENTARY, OS_MX, OsDetect, read_os_release
-
+from rospkg.os_detect import (
+    OS_DEBIAN,
+    OS_LINARO,
+    OS_UBUNTU,
+    OS_ELEMENTARY,
+    OS_MX,
+    OS_POP,
+    OsDetect,
+    read_os_release
+)
 from .pip import PIP_INSTALLER
 from .gem import GEM_INSTALLER
 from .source import SOURCE_INSTALLER
@@ -55,6 +63,7 @@ def register_platforms(context):
     register_elementary(context)
     register_linaro(context)
     register_mx(context)
+    register_pop(context)
 
 
 def register_debian(context):
@@ -98,6 +107,16 @@ def register_mx(context):
         context.set_os_override(OS_DEBIAN, version[version.find("(") + 1:version.find(")")])
 
 
+def register_pop(context):
+    # Pop! OS is an alias for Ubuntu. If Pop! is detected and it's
+    # not set as an override force ubuntu.
+    (os_name, os_version) = context.get_os_name_and_version()
+    if os_name == OS_POP and not context.os_override:
+        print('rosdep detected OS: [%s] aliasing it to: [%s]' %
+              (OS_POP, OS_UBUNTU), file=sys.stderr)
+        context.set_os_override(OS_UBUNTU, context.os_detect.get_codename())
+
+
 def register_ubuntu(context):
     context.add_os_installer_key(OS_UBUNTU, APT_INSTALLER)
     context.add_os_installer_key(OS_UBUNTU, PIP_INSTALLER)
diff --git a/src/rosdep2/platforms/osx.py b/src/rosdep2/platforms/osx.py
index c17e811c0..13b072377 100644
--- a/src/rosdep2/platforms/osx.py
+++ b/src/rosdep2/platforms/osx.py
@@ -303,7 +303,7 @@ def handle_options(options):
 
             # make sure options is a list of list of strings
             try:
-                valid = all([isinstance(x, _basestring) for l in options for x in l])
+                valid = all([isinstance(x, _basestring) for option in options for x in option])
             except Exception as e:
                 raise InvalidData("Invalid list of options '%s', error: %s" % (options, e))
             else:
diff --git a/stdeb.cfg b/stdeb.cfg
index da847fc80..293b2262f 100644
--- a/stdeb.cfg
+++ b/stdeb.cfg
@@ -16,8 +16,8 @@ X-Python3-Version: >= 3.4
 Setup-Env-Vars: SKIP_PYTHON_MODULES=1
 
 [rosdep_modules]
-Depends: ca-certificates, python-rospkg-modules (>= 1.1.10), python-yaml, python-catkin-pkg-modules (>= 0.4.0), python-rosdistro-modules (>= 0.7.5), sudo
-Depends3: ca-certificates, python3-rospkg-modules (>= 1.1.10), python3-yaml, python3-catkin-pkg-modules (>= 0.4.0), python3-rosdistro-modules (>= 0.7.5), sudo
+Depends: ca-certificates, python-rospkg-modules (>= 1.2.7), python-yaml, python-catkin-pkg-modules (>= 0.4.0), python-rosdistro-modules (>= 0.7.5), sudo
+Depends3: ca-certificates, python3-rospkg-modules (>= 1.2.7), python3-yaml, python3-catkin-pkg-modules (>= 0.4.0), python3-rosdistro-modules (>= 0.7.5), sudo
 Conflicts: python-rosdep (<< 0.18.0), python-rosdep2
 Conflicts3: python3-rosdep (<< 0.18.0), python3-rosdep2
 Replaces: python-rosdep (<< 0.18.0)