diff --git a/octodns/cmds/compare.py b/octodns/cmds/compare.py
index 4123643..9bf9f1c 100755
--- a/octodns/cmds/compare.py
+++ b/octodns/cmds/compare.py
@@ -7,6 +7,7 @@ from __future__ import absolute_import, division, print_function, \
     unicode_literals
 
 from pprint import pprint
+import sys
 
 from octodns.cmds.args import ArgumentParser
 from octodns.manager import Manager
@@ -23,13 +24,25 @@ def main():
                         help='Second source(s) to pull data from')
     parser.add_argument('--zone', default=None, required=True,
                         help='Zone to compare')
-
+    parser.add_argument('--ignore-prefix', default=None, required=False,
+                        help='Record prefix to ignore from list of changes')
     args = parser.parse_args()
 
     manager = Manager(args.config_file)
     changes = manager.compare(args.a, args.b, args.zone)
+
+    # Filter changes list based on ignore-prefix argument if present
+    if args.ignore_prefix:
+        pattern = args.ignore_prefix
+        changes = [c for c in changes
+                   if not c.record.fqdn.startswith(pattern)]
+
     pprint(changes)
 
+    # Exit with non-zero exit code if changes exist
+    if len(changes):
+        sys.exit(1)
+
 
 if __name__ == '__main__':
     main()
diff --git a/requirements.txt b/requirements.txt
index dd1643f..24f57ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,14 @@
 PyYaml==5.3.1
 azure-common==1.1.25
 azure-mgmt-dns==3.0.0
-boto3==1.14.14
-botocore==1.17.14
+boto3==1.14.52
+botocore==1.17.52
 dnspython==1.16.0
 docutils==0.16
 dyn==1.8.1
 edgegrid-python==1.1.1
 futures==3.2.0; python_version < '3.2'
-google-cloud-core==1.3.0
+google-cloud-core==1.4.1
 google-cloud-dns==0.32.0
 ipaddress==1.0.23; python_version < '3.3'
 jmespath==0.10.0
@@ -17,7 +17,7 @@ natsort==6.2.1
 ns1-python==0.16.0
 ovh==0.5.0
 pycountry-convert==0.7.2
-pycountry==19.8.18
+pycountry==20.7.3
 python-dateutil==2.8.1
 requests==2.24.0
 s3transfer==0.3.3