diff --git a/docs/configuring-playbook-rest-auth.md b/docs/configuring-playbook-rest-auth.md
index e393b4f5..e320ca49 100644
--- a/docs/configuring-playbook-rest-auth.md
+++ b/docs/configuring-playbook-rest-auth.md
@@ -1,6 +1,6 @@
 # Setting up the REST authentication password provider module
 
-The playbook can now install and configure [matrix-synapse-rest-auth](https://github.com/kamax-io/matrix-synapse-rest-auth) for you.
+The playbook can install and configure [matrix-synapse-rest-auth](https://github.com/kamax-io/matrix-synapse-rest-auth) for you.
 
 See that project's documentation to learn what it does and why it might be useful to you.
 
diff --git a/docs/configuring-playbook-shared-secret-auth.md b/docs/configuring-playbook-shared-secret-auth.md
new file mode 100644
index 00000000..df5eddd8
--- /dev/null
+++ b/docs/configuring-playbook-shared-secret-auth.md
@@ -0,0 +1,12 @@
+# Setting up the Shared Secret Auth password provider module
+
+The playbook can install and configure [matrix-synapse-shared-secret-auth](https://github.com/devture/matrix-synapse-shared-secret-auth) for you.
+
+See that project's documentation to learn what it does and why it might be useful to you.
+
+If you decide that you'd like to let this playbook install it for you, you need some configuration like this:
+
+```yaml
+matrix_synapse_ext_password_provider_shared_secret_auth_enabled: true
+matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret: YOUR_SHARED_SECRET_GOES_HERE
+```
\ No newline at end of file
diff --git a/docs/configuring-playbook.md b/docs/configuring-playbook.md
index 2daf5767..0f7f0e51 100644
--- a/docs/configuring-playbook.md
+++ b/docs/configuring-playbook.md
@@ -33,4 +33,6 @@ When you're done with all the configuration you'd like to do, continue with [Ins
 
 - [Using your own webserver, instead of this playbook's nginx proxy](configuring-playbook-own-webserver.md) (optional)
 
-- [Setting up the REST authentication password provider module](configuring-playbook-rest-auth.md) (optional)
\ No newline at end of file
+- [Setting up the REST authentication password provider module](configuring-playbook-rest-auth.md) (optional)
+
+- [Setting up the Shared Secret Auth password provider module](configuring-playbook-shared-secret-auth.md) (optional)
\ No newline at end of file
diff --git a/roles/matrix-server/defaults/main.yml b/roles/matrix-server/defaults/main.yml
index e8ab727a..13408d52 100644
--- a/roles/matrix-server/defaults/main.yml
+++ b/roles/matrix-server/defaults/main.yml
@@ -84,6 +84,12 @@ matrix_synapse_ext_password_provider_rest_auth_registration_enforce_lowercase: f
 matrix_synapse_ext_password_provider_rest_auth_registration_profile_name_autofill: true
 matrix_synapse_ext_password_provider_rest_auth_login_profile_name_autofill: false
 
+# Enable this to activate the Shared Secret Auth password provider module.
+# See: https://github.com/devture/matrix-synapse-shared-secret-auth
+matrix_synapse_ext_password_provider_shared_secret_auth_enabled: false
+matrix_synapse_ext_password_provider_shared_secret_auth_download_url: "https://raw.githubusercontent.com/devture/matrix-synapse-shared-secret-auth/1.0/shared_secret_authenticator.py"
+matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret: ""
+
 matrix_postgres_data_path: "{{ matrix_base_data_path }}/postgres"
 matrix_nginx_proxy_data_path: "{{ matrix_base_data_path }}/nginx-proxy"
 matrix_nginx_proxy_confd_path: "{{ matrix_nginx_proxy_data_path }}/conf.d"
diff --git a/roles/matrix-server/tasks/setup_synapse_ext_shared_secret_auth.yml b/roles/matrix-server/tasks/setup_synapse_ext_shared_secret_auth.yml
index f96a5ce0..4f8bd7ee 100644
--- a/roles/matrix-server/tasks/setup_synapse_ext_shared_secret_auth.yml
+++ b/roles/matrix-server/tasks/setup_synapse_ext_shared_secret_auth.yml
@@ -4,6 +4,11 @@
 # Tasks related to setting up matrix-synapse-shared-secret-auth
 #
 
+- name: Fail if Shared Secret Auth enabled, but no secret set
+  fail:
+    msg: "Shared Secret Auth is enabled, but no secret has been set in matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret"
+  when: "matrix_synapse_ext_password_provider_shared_secret_auth_enabled and matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret == ''"
+
 - name: Download matrix-synapse-shared-secret-auth
   get_url:
     url: "{{ matrix_synapse_ext_password_provider_shared_secret_auth_download_url }}"