diff --git a/ansible/deploy-fastpath.yml b/ansible/deploy-fastpath.yml
index b9a8e502..8795c8b7 100644
--- a/ansible/deploy-fastpath.yml
+++ b/ansible/deploy-fastpath.yml
@@ -6,6 +6,28 @@
     - fastpath2.prod.ooni.io
     - reuploaderfastpath.prod.ooni.io
   become: true
+  vars:
+    nginx_install_method: official_repo
+  pre_tasks:
+    - name: Find any nginx.org apt source files left over from a previous nginxinc.nginx install
+      ansible.builtin.find:
+        paths: /etc/apt/sources.list.d
+        patterns: "*.list"
+        contains: "nginx\\.org/packages"
+        read_whole_file: true
+      register: _stale_nginx_apt_sources
+      tags:
+        - nginx
+        - packages
+
+    - name: Remove stale nginx.org apt source files (avoids "Conflicting values set for option Signed-By")
+      ansible.builtin.file:
+        path: "{{ item.path }}"
+        state: absent
+      loop: "{{ _stale_nginx_apt_sources.files }}"
+      tags:
+        - nginx
+        - packages
   roles:
     - role: bootstrap
     - role: nginx
diff --git a/ansible/host_vars/fastpath.prod.ooni.io/vars.yml b/ansible/host_vars/fastpath.prod.ooni.io/vars.yml
index b2847e9d..986a62f6 100644
--- a/ansible/host_vars/fastpath.prod.ooni.io/vars.yml
+++ b/ansible/host_vars/fastpath.prod.ooni.io/vars.yml
@@ -4,4 +4,4 @@ bucket_name: "ooni-data-eu-fra"
 # COLLECTOR ID SHOULD BE DIFFERENT BETWEEN EACH FASTPATH INSTANCE
 collector_id: "1"
 env: "prod"
-fastpath_image: "ooni/fastpath:20260908-c4d5a24d"
+fastpath_image: "ooni/fastpath:20260921-ac774cb4"
diff --git a/ansible/host_vars/fastpath2.prod.ooni.io/vars.yml b/ansible/host_vars/fastpath2.prod.ooni.io/vars.yml
index 1be99841..26123dcc 100644
--- a/ansible/host_vars/fastpath2.prod.ooni.io/vars.yml
+++ b/ansible/host_vars/fastpath2.prod.ooni.io/vars.yml
@@ -4,4 +4,4 @@ bucket_name: "ooni-data-eu-fra"
 # COLLECTOR ID SHOULD BE DIFFERENT BETWEEN EACH FASTPATH INSTANCE
 collector_id: "4"
 env: "prod"
-fastpath_image: "ooni/fastpath:20260908-c4d5a24d"
+fastpath_image: "ooni/fastpath:20260921-ac774cb4"
diff --git a/ansible/host_vars/reuploaderfastpath.prod.ooni.io/vars.yml b/ansible/host_vars/reuploaderfastpath.prod.ooni.io/vars.yml
index 430f3f49..eef14c04 100644
--- a/ansible/host_vars/reuploaderfastpath.prod.ooni.io/vars.yml
+++ b/ansible/host_vars/reuploaderfastpath.prod.ooni.io/vars.yml
@@ -4,4 +4,4 @@ bucket_name: "ooni-data-eu-fra"
 # COLLECTOR ID SHOULD BE DIFFERENT BETWEEN EACH FASTPATH INSTANCE
 collector_id: "5"
 env: "prod"
-fastpath_image: "ooni/fastpath:20260908-c4d5a24d"
+fastpath_image: "ooni/fastpath:20260921-ac774cb4"
diff --git a/ansible/roles/nginx/tasks/main.yml b/ansible/roles/nginx/tasks/main.yml
index dbb2c3fc..bd70a7cd 100644
--- a/ansible/roles/nginx/tasks/main.yml
+++ b/ansible/roles/nginx/tasks/main.yml
@@ -71,7 +71,7 @@
 
     - name: Add the nginx.org apt repository
       ansible.builtin.apt_repository:
-        repo: "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://nginx.org/packages/debian {{ ansible_distribution_release }} nginx"
+        repo: "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://nginx.org/packages/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} nginx"
         filename: nginx
         state: present