diff --git a/debian/changelog b/debian/changelog
index eb81083..b769fd6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -21,6 +21,8 @@ ubuntu-dev-tools (0.178) UNRELEASED; urgency=medium
 
   [ Dimitri John Ledkov ]
   * pullpkg.py: fix --mirror option parsing.
+  * config.py: add UBUNTU_INTERNAL_MIRROR option, for launchpad internal
+    mirror.
 
  -- Mattia Rizzolo <mattia@debian.org>  Tue, 22 Dec 2020 17:50:52 +0100
 
diff --git a/ubuntutools/config.py b/ubuntutools/config.py
index 5cc14ce..dabfaa2 100644
--- a/ubuntutools/config.py
+++ b/ubuntutools/config.py
@@ -43,6 +43,7 @@ class UDTConfig(object):
         'MIRROR_FALLBACK': True,
         'UBUNTU_MIRROR': 'http://archive.ubuntu.com/ubuntu',
         'UBUNTU_PORTS_MIRROR': 'http://ports.ubuntu.com',
+        'UBUNTU_INTERNAL_MIRROR': 'http://ftpmaster.internal/ubuntu',
         'UBUNTU_DDEBS_MIRROR': 'http://ddebs.ubuntu.com',
         'UPDATE_BUILDER': False,
         'WORKDIR': None,