diff --git a/roles/matrix-base/defaults/main.yml b/roles/matrix-base/defaults/main.yml
index 7f4c6ace..90061a06 100644
--- a/roles/matrix-base/defaults/main.yml
+++ b/roles/matrix-base/defaults/main.yml
@@ -22,8 +22,6 @@ matrix_server_fqn_dimension: "dimension.{{ matrix_domain }}"
 matrix_server_fqn_jitsi: "jitsi.{{ matrix_domain }}"
 
 matrix_user_username: "matrix"
-matrix_user_uid: 991
-matrix_user_gid: 991
 
 matrix_base_data_path: "/matrix"
 matrix_base_data_path_mode: "750"
diff --git a/roles/matrix-base/tasks/main.yml b/roles/matrix-base/tasks/main.yml
index 827a4101..c51d6811 100644
--- a/roles/matrix-base/tasks/main.yml
+++ b/roles/matrix-base/tasks/main.yml
@@ -12,6 +12,13 @@
   tags:
     - setup-all
 
+# This needs to always run, because it populates `matrix_user_uid` and `matrix_user_gid`,
+# which are required by many other roles.
+- import_tasks: "{{ role_path }}/tasks/setup_matrix_user.yml"
+  when: run_setup|bool
+  tags:
+    - always
+
 - import_tasks: "{{ role_path }}/tasks/setup_matrix_base.yml"
   when: run_setup|bool
   tags:
diff --git a/roles/matrix-base/tasks/setup_matrix_base.yml b/roles/matrix-base/tasks/setup_matrix_base.yml
index 24217883..fa26b5f5 100644
--- a/roles/matrix-base/tasks/setup_matrix_base.yml
+++ b/roles/matrix-base/tasks/setup_matrix_base.yml
@@ -1,18 +1,5 @@
 ---
 
-- name: Ensure Matrix group is created
-  group:
-    name: "{{ matrix_user_username }}"
-    gid: "{{ matrix_user_gid }}"
-    state: present
-
-- name: Ensure Matrix user is created
-  user:
-    name: "{{ matrix_user_username }}"
-    uid: "{{ matrix_user_uid }}"
-    state: present
-    group: "{{ matrix_user_username }}"
-
 - name: Ensure Matrix base path exists
   file:
     path: "{{ item }}"
@@ -54,4 +41,3 @@
     src: "{{ role_path }}/templates/usr-local-bin/matrix-remove-all.j2"
     dest: "{{ matrix_local_bin_path }}/matrix-remove-all"
     mode: 0750
-
diff --git a/roles/matrix-base/tasks/setup_matrix_user.yml b/roles/matrix-base/tasks/setup_matrix_user.yml
new file mode 100644
index 00000000..277a41d9
--- /dev/null
+++ b/roles/matrix-base/tasks/setup_matrix_user.yml
@@ -0,0 +1,22 @@
+---
+
+- name: Ensure Matrix group is created
+  group:
+    name: "{{ matrix_user_username }}"
+    state: present
+  register: matrix_group
+
+- name: Set Matrix Group GID Variable
+  set_fact:
+    matrix_user_gid: "{{ matrix_group.gid }}"
+
+- name: Ensure Matrix user is created
+  user:
+    name: "{{ matrix_user_username }}"
+    state: present
+    group: "{{ matrix_user_username }}"
+  register: matrix_user
+
+- name: Set Matrix Group UID Variable
+  set_fact:
+    matrix_user_uid: "{{ matrix_user.uid }}"