diff --git a/roles/core/tasks/mirrors.yml b/roles/core/tasks/mirrors.yml
index 279ae08..1de9b4e 100644
--- a/roles/core/tasks/mirrors.yml
+++ b/roles/core/tasks/mirrors.yml
@@ -1,4 +1,10 @@
 ---
+
+- name: Correct ansible_distribution_release for Debian Buster
+  when: ansible_distribution == 'Debian' and ansible_distribution_version == 'buster/sid'
+  set_fact:
+    ansible_distribution_release: buster
+
 - name: Configure /etc/apt/sources.list
   template:
     src: '{{ ansible_distribution | lower}}.sources.list'
diff --git a/roles/core/templates/debian.sources.list b/roles/core/templates/debian.sources.list
new file mode 100644
index 0000000..f5156e4
--- /dev/null
+++ b/roles/core/templates/debian.sources.list
@@ -0,0 +1,9 @@
+deb http://mirror.csclub.uwaterloo.ca/debian/ {{ ansible_distribution_release }} main non-free contrib
+deb-src http://mirror.csclub.uwaterloo.ca/debian/ {{ ansible_distribution_release }} main non-free contrib
+
+deb http://mirror.csclub.uwaterloo.ca/debian-security/ {{ ansible_distribution_release }}/updates main contrib non-free
+deb-src http://mirror.csclub.uwaterloo.ca/debian-security/ {{ ansible_distribution_release }}/updates main contrib non-free
+
+# {{ ansible_distribution_release }}-updates, previously known as 'volatile'
+deb http://mirror.csclub.uwaterloo.ca/debian/ {{ ansible_distribution_release }}-updates main contrib non-free
+deb-src http://mirror.csclub.uwaterloo.ca/debian/ {{ ansible_distribution_release }}-updates main contrib non-free