diff --git a/docs/self-building.md b/docs/self-building.md
index da8c24b07..d8dc03e03 100644
--- a/docs/self-building.md
+++ b/docs/self-building.md
@@ -18,6 +18,7 @@ List of roles where self-building the Docker image is currently possible:
 - `matrix-corporal`
 - `matrix-ma1sd`
 - `matrix-mailer`
+- `matrix-bridge-appservice-slack`
 - `matrix-bridge-mautrix-facebook`
 - `matrix-bridge-mautrix-hangouts`
 - `matrix-bridge-mautrix-telegram`
diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 42c2e3af9..b43ed11f2 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -110,6 +110,8 @@ matrix_appservice_webhooks_systemd_required_services_list: |
 # We don't enable bridges by default.
 matrix_appservice_slack_enabled: false
 
+matrix_appservice_slack_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+
 # Normally, matrix-nginx-proxy is enabled and nginx can reach matrix-appservice-slack over the container network.
 # If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
 # matrix-appservice-slack's client-server port to the local host.
diff --git a/roles/matrix-bridge-appservice-slack/defaults/main.yml b/roles/matrix-bridge-appservice-slack/defaults/main.yml
index 28646a3c4..997cfa5e6 100644
--- a/roles/matrix-bridge-appservice-slack/defaults/main.yml
+++ b/roles/matrix-bridge-appservice-slack/defaults/main.yml
@@ -3,6 +3,10 @@
 
 matrix_appservice_slack_enabled: true
 
+matrix_appservice_slack_container_self_build: false
+matrix_appservice_slack_docker_repo: "https://github.com/matrix-org/matrix-appservice-slack.git"
+matrix_appservice_slack_docker_src_files_path: "{{ matrix_base_data_path }}/appservice-slack/docker-src"
+
 matrix_appservice_slack_docker_image: "docker.io/matrixdotorg/matrix-appservice-slack:release-1.5.0"
 matrix_appservice_slack_docker_image_force_pull: "{{ matrix_appservice_slack_docker_image.endswith(':latest') }}"
 
diff --git a/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml b/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
index 29b0f39e9..721a5d6bd 100644
--- a/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
+++ b/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
@@ -8,9 +8,11 @@
     owner: "{{ matrix_user_username }}"
     group: "{{ matrix_user_groupname }}"
   with_items:
-    - "{{ matrix_appservice_slack_base_path }}"
-    - "{{ matrix_appservice_slack_config_path }}"
-    - "{{ matrix_appservice_slack_data_path }}"
+    - { path: "{{ matrix_appservice_slack_base_path }}", when: true }
+    - { path: "{{ matrix_appservice_slack_config_path }}", when: true }
+    - { path: "{{ matrix_appservice_slack_data_path }}", when: true }
+    - { path: "{{ matrix_appservice_slack_docker_src_files_path }}", when: "{{ matrix_appservice_slack_container_self_build }}" }
+  when: item.when|bool
 
 - set_fact:
     matrix_appservice_slack_requires_restart: false
@@ -35,6 +37,26 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_appservice_slack_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_appservice_slack_docker_image_force_pull }}"
+  when: "not matrix_appservice_slack_container_self_build|bool"
+
+- name: Ensure matrix-appservice-slack repository is present when self-building
+  git:
+    repo: "{{ matrix_appservice_slack_docker_repo }}"
+    dest: "{{ matrix_appservice_slack_docker_src_files_path }}"
+    force: "yes"
+  register: matrix_appservice_slack_git_pull_results
+  when: "matrix_appservice_slack_container_self_build|bool"
+
+- name: Ensure matrix-appservice-slack Docker image is built
+  docker_image:
+    name: "{{ matrix_appservice_slack_docker_image }}"
+    source: build
+    force_source: yes
+    build:
+      dockerfile: Dockerfile
+      path: "{{ matrix_appservice_slack_docker_src_files_path }}"
+      pull: yes
+  when: "matrix_appservice_slack_container_self_build|bool and matrix_appservice_slack_git_pull_results.changed"
 
 - name: Ensure Matrix Appservice Slack config installed
   copy: