diff --git a/rattail_fabric2/apt.py b/rattail_fabric2/apt.py
index a4e97dc..0ca2525 100644
--- a/rattail_fabric2/apt.py
+++ b/rattail_fabric2/apt.py
@@ -67,6 +67,16 @@ def add_source(c, entry):
         update(c)
 
 
+def upgrade(c, frontend='noninteractive'):
+    """
+    Perform an ``apt-get upgrade`` operation.
+    """
+    options = ''
+    if frontend == 'noninteractive':
+        options = '--option Dpkg::Options::="--force-confdef" --option Dpkg::Options::="--force-confold"'
+    c.sudo('DEBIAN_FRONTEND={} apt-get --assume-yes {} upgrade'.format(frontend, options))
+
+
 def dist_upgrade(c, frontend='noninteractive'):
     """
     Perform a full ``apt-get dist-upgrade`` operation.