diff --git a/etc/apt/sources.list/12.04 b/etc/apt/sources.list/12.04
index 7a23a23d..cc365f65 100644
--- a/etc/apt/sources.list/12.04
+++ b/etc/apt/sources.list/12.04
@@ -31,3 +31,8 @@ deb-src http://archive.canonical.com/ubuntu precise partner
 ## developers who want to ship their latest software.
 deb http://extras.ubuntu.com/ubuntu precise main
 deb-src http://extras.ubuntu.com/ubuntu precise main
+
+# https://wiki.ubuntu.com/DebuggingProgramCrash
+# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 428D7C01
+deb http://ddebs.ubuntu.com precise main restricted universe multiverse
+deb http://ddebs.ubuntu.com precise-updates main restricted universe multiverse
diff --git a/etc/apt/sources.list/14.04 b/etc/apt/sources.list/14.04
index 13bce8af..70c6c6dd 100644
--- a/etc/apt/sources.list/14.04
+++ b/etc/apt/sources.list/14.04
@@ -31,3 +31,8 @@ deb-src http://archive.canonical.com/ubuntu trusty partner
 ## developers who want to ship their latest software.
 deb http://extras.ubuntu.com/ubuntu trusty main
 deb-src http://extras.ubuntu.com/ubuntu trusty main
+
+# https://wiki.ubuntu.com/DebuggingProgramCrash
+# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 428D7C01
+deb http://ddebs.ubuntu.com trusty main restricted universe multiverse
+deb http://ddebs.ubuntu.com trusty-updates main restricted universe multiverse
diff --git a/etc/apt/sources.list/15.04 b/etc/apt/sources.list/15.04
index 1fb1943f..c289b563 100644
--- a/etc/apt/sources.list/15.04
+++ b/etc/apt/sources.list/15.04
@@ -26,3 +26,8 @@ deb-src http://security.ubuntu.com/ubuntu vivid-security main restricted univers
 ## respective vendors as a service to Ubuntu users.
 deb http://archive.canonical.com/ubuntu vivid partner
 deb-src http://archive.canonical.com/ubuntu vivid partner
+
+# https://wiki.ubuntu.com/DebuggingProgramCrash
+# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 428D7C01
+deb http://ddebs.ubuntu.com vivid main restricted universe multiverse
+deb http://ddebs.ubuntu.com vivid-updates main restricted universe multiverse
diff --git a/etc/apt/sources.list/15.10 b/etc/apt/sources.list/15.10
index 930dd1fd..fc17b648 100644
--- a/etc/apt/sources.list/15.10
+++ b/etc/apt/sources.list/15.10
@@ -26,3 +26,8 @@ deb-src http://security.ubuntu.com/ubuntu wily-security main restricted universe
 ## respective vendors as a service to Ubuntu users.
 deb http://archive.canonical.com/ubuntu wily partner
 deb-src http://archive.canonical.com/ubuntu wily partner
+
+# https://wiki.ubuntu.com/DebuggingProgramCrash
+# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 428D7C01
+deb http://ddebs.ubuntu.com wily main restricted universe multiverse
+deb http://ddebs.ubuntu.com wily-updates main restricted universe multiverse