diff --git a/roles/configure-mirrors/README.rst b/roles/configure-mirrors/README.rst
index 7d2ce0f9d..3d11207c5 100644
--- a/roles/configure-mirrors/README.rst
+++ b/roles/configure-mirrors/README.rst
@@ -31,7 +31,15 @@ An ansible role to configure services to use mirrors.
    when accessing unsigned mirrors with newer releases like
    Ubuntu Bionic.
 
--- zuul:rolevar:: configure_mirrors_extra_repos
+.. zuul:rolevar:: enable_deb_src_repos
+   :default: True
+
+   Set this to True in order to enable deb-src entries in sources.list
+   configs for apt. Note this option currently only works on Debian
+   (not Ubuntu) installations and will be set to default to False in
+   the near future.
+
+.. zuul:rolevar:: configure_mirrors_extra_repos
    :default: True
 
    Set to False to opt-out of installing extra repositories such
diff --git a/roles/configure-mirrors/defaults/main.yaml b/roles/configure-mirrors/defaults/main.yaml
index 188c21161..f8230f15f 100644
--- a/roles/configure-mirrors/defaults/main.yaml
+++ b/roles/configure-mirrors/defaults/main.yaml
@@ -10,4 +10,5 @@ http_or_https: >-
   {%- endif -%}
 pypi_mirror: "{{ http_or_https }}://{{ pypi_fqdn }}/pypi/simple"
 wheel_mirror: "{{ http_or_https }}://{{ mirror_fqdn }}/wheel/{{ ansible_distribution | lower }}-{{ ansible_distribution_version }}-{{ ansible_architecture | lower }}"
+enable_deb_src_repos: True
 configure_mirrors_extra_repos: True
diff --git a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/backports.list.j2 b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/backports.list.j2
index 82a9787f1..485651c25 100644
--- a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/backports.list.j2
+++ b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/backports.list.j2
@@ -1,3 +1,5 @@
 # {{ ansible_managed }}
 deb {{ package_mirror }} {{ ansible_distribution_release }}-backports main
+{% if enable_deb_src_repos | bool -%}
 deb-src {{ package_mirror }} {{ ansible_distribution_release }}-backports main
+{% endif -%}
diff --git a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/default.list.j2 b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/default.list.j2
index ca3240d38..07ebb910a 100644
--- a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/default.list.j2
+++ b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/default.list.j2
@@ -1,3 +1,5 @@
 # {{ ansible_managed }}
 deb {{ package_mirror }} {{ ansible_distribution_release }} main
+{% if enable_deb_src_repos | bool -%}
 deb-src {{ package_mirror }} {{ ansible_distribution_release }} main
+{% endif -%}
diff --git a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/security.list.j2 b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/security.list.j2
index 71bdabdbd..d22515378 100644
--- a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/security.list.j2
+++ b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/security.list.j2
@@ -1,3 +1,5 @@
 # {{ ansible_managed }}
 deb {{ security_mirror }} {{ ansible_distribution_release }}{% if ansible_distribution_release not in ['jessie', 'stretch', 'buster'] %}-security{% endif %} main
+{% if enable_deb_src_repos | bool -%}
 deb-src {{ security_mirror }} {{ ansible_distribution_release }}{% if ansible_distribution_release not in ['jessie', 'stretch', 'buster'] %}-security{% endif %} main
+{% endif -%}
diff --git a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/updates.list.j2 b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/updates.list.j2
index 155b23024..159677462 100644
--- a/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/updates.list.j2
+++ b/roles/configure-mirrors/templates/apt/etc/apt/sources.list.d/updates.list.j2
@@ -1,3 +1,5 @@
 # {{ ansible_managed }}
 deb {{ package_mirror }} {{ ansible_distribution_release }}-updates main
+{% if enable_deb_src_repos | bool -%}
 deb-src {{ package_mirror }} {{ ansible_distribution_release }}-updates main
+{% endif -%}