diff --git a/ansible/roles/semaphore/defaults/main.yml b/ansible/roles/semaphore/defaults/main.yml
index 51afad1..5511e4f 100644
--- a/ansible/roles/semaphore/defaults/main.yml
+++ b/ansible/roles/semaphore/defaults/main.yml
@@ -83,6 +83,11 @@ semaphore_quadlet_dir: /etc/containers/systemd
 # container restarts and rebuilds.
 semaphore_collections_dir: /opt/semaphore/ansible-collections
 
+# UID of the semaphore user inside the container (uid=1001).
+# The host-side collections directory must be owned by this UID so the
+# container process can write collections into the bind-mount.
+semaphore_container_uid: 1001
+
 semaphore_ansible_collections:
   - name: containers.podman
     version: ">=1.10.0"
diff --git a/ansible/roles/semaphore/tasks/collections.yml b/ansible/roles/semaphore/tasks/collections.yml
index 8b7c082..7e59bbb 100644
--- a/ansible/roles/semaphore/tasks/collections.yml
+++ b/ansible/roles/semaphore/tasks/collections.yml
@@ -13,7 +13,7 @@
   ansible.builtin.file:
     path: "{{ semaphore_collections_dir }}"
     state: directory
-    owner: root
+    owner: "{{ semaphore_container_uid }}"
     group: root
     mode: "0755"