diff --git a/ansible/roles/semaphore/templates/semaphore.container.j2 b/ansible/roles/semaphore/templates/semaphore.container.j2
index db23e18..c73e65f 100644
--- a/ansible/roles/semaphore/templates/semaphore.container.j2
+++ b/ansible/roles/semaphore/templates/semaphore.container.j2
@@ -18,9 +18,9 @@ PublishPort={{ semaphore_listen_address }}:{{ semaphore_listen_port }}:3000
 Volume={{ semaphore_data_volume }}:/var/lib/semaphore:Z
 
 # Ansible collections — host-side dir populated by the semaphore role.
-# Bind-mounted to a neutral path; ANSIBLE_COLLECTIONS_PATHS tells
-# ansible-galaxy where to find them without touching ~/.ansible/.
-Volume={{ semaphore_collections_dir }}:/opt/ansible-collections:Z,ro
+# Bind-mounted to a neutral path; ANSIBLE_COLLECTIONS_PATH tells
+# Ansible where to find them without touching ~/.ansible/.
+Volume={{ semaphore_collections_dir }}:/opt/ansible-collections:Z
 
 # Database — points at the postgres container on the user-defined network
 Environment=SEMAPHORE_DB_DIALECT=postgres
@@ -53,7 +53,7 @@ Environment=SEMAPHORE_WEB_ROOT={{ semaphore_web_url }}
 Environment=TZ=America/Chicago
 
 # Tell Ansible where to find collections installed by the role
-Environment=ANSIBLE_COLLECTIONS_PATHS=/opt/ansible-collections
+Environment=ANSIBLE_COLLECTIONS_PATH=/opt/ansible-collections
 
 [Service]
 Restart=always