diff --git a/pipreqs/mapping b/pipreqs/mapping
index 3608616..4c72ea8 100644
--- a/pipreqs/mapping
+++ b/pipreqs/mapping
@@ -9,7 +9,8 @@ BeautifulSoupTests:BeautifulSoup
 BioSQL:biopython
 BuildbotStatusShields:BuildbotEightStatusShields
 ComputedAttribute:ExtensionClass
-Crypto:pycrypto
+Crypto:pycryptodome
+Cryptodome:pycryptodomex
 FSM:pexpect
 FiftyOneDegrees:51degrees_mobile_detector_v3_wrapper
 GeoBaseMain:GeoBasesDev
@@ -800,7 +801,7 @@ nester:abofly
 nester:bssm_pythonSig
 novaclient:python_novaclient
 oauth2_provider:alauda_django_oauth
-oauth2client:google_api_python_client
+oauth2client:oauth2client
 odf:odfpy
 ometa:Parsley
 openid:python_openid
@@ -913,6 +914,7 @@ polymorphic:django_polymorphic
 portalocker:ConcurrentLogHandler
 postmark:python_postmark
 powerprompt:bash_powerprompt
+prefetch:django-prefetch
 printList:AndrewList
 progressbar:progressbar2
 progressbar:progressbar33
diff --git a/pipreqs/pipreqs.py b/pipreqs/pipreqs.py
index 371a4fb..b5f664b 100755
--- a/pipreqs/pipreqs.py
+++ b/pipreqs/pipreqs.py
@@ -290,7 +290,7 @@ def get_pkg_names(pkgs):
         # simply use the package name.
         result.add(data.get(pkg, pkg))
     # Return a sorted list for backward compatibility.
-    return sorted(result)
+    return sorted(result, key=lambda s: s.lower())
 
 
 def get_name_without_alias(name):
diff --git a/tests/test_pipreqs.py b/tests/test_pipreqs.py
index cefd57f..7f2daaf 100755
--- a/tests/test_pipreqs.py
+++ b/tests/test_pipreqs.py
@@ -69,6 +69,12 @@ class TestPipreqs(unittest.TestCase):
                 item['name'].lower() in self.modules,
                 "Import item appears to be missing " + item['name'])
 
+    def test_get_pkg_names(self):
+        pkgs = ['jury', 'Japan', 'camel', 'Caroline']
+        actual_output = pipreqs.get_pkg_names(pkgs)
+        expected_output = ['camel', 'Caroline', 'Japan', 'jury']
+        self.assertEqual(actual_output, expected_output)
+
     def test_get_use_local_only(self):
         """
         Test without checking PyPI, check to see if names of local imports matches what we expect