diff --git a/releasenotes/notes/drop-legacy-haproxy-service-format-f47b9e2c3a6d58e1.yaml b/releasenotes/notes/drop-legacy-haproxy-service-format-f47b9e2c3a6d58e1.yaml
new file mode 100644
index 0000000..8bc1bb4
--- /dev/null
+++ b/releasenotes/notes/drop-legacy-haproxy-service-format-f47b9e2c3a6d58e1.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    The legacy ``service:`` wrapper in ``haproxy_service_configs`` is no longer
+    supported. Only the flat service definition format is accepted. Ensure all
+    service entries are updated before upgrading.
diff --git a/tasks/haproxy_service_config.yml b/tasks/haproxy_service_config.yml
index 8825ecf..4a7e24a 100644
--- a/tasks/haproxy_service_config.yml
+++ b/tasks/haproxy_service_config.yml
@@ -13,17 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# NOTE(damiandabrowski): Deprecated haproxy_service_configs format
-# conversion will be removed in 2024.1.
-- name: Define blank _haproxy_service_configs_simplified variable
-  ansible.builtin.set_fact:
-    _haproxy_service_configs_simplified: []
-
-- name: Append services to _haproxy_service_configs_simplified list
-  ansible.builtin.set_fact:
-    _haproxy_service_configs_simplified: "{{ _haproxy_service_configs_simplified + [(item.service is defined) | ternary(item.service, item)] }}"
-  loop: "{{ haproxy_service_configs }}"
-
 ###########################################################################
 # Service frontends and backends assembled from fragments into haproxy.conf
 ###########################################################################
@@ -35,9 +24,7 @@
     owner: root
     group: haproxy
     mode: "0640"
-  # NOTE(damiandabrowski): _haproxy_service_configs_simplified should be replaced
-  # with haproxy_service_configs in 2024.1.
-  loop: "{{ _haproxy_service_configs_simplified }}"
+  loop: "{{ haproxy_service_configs }}"
   loop_control:
     loop_var: service
   when:
@@ -55,9 +42,7 @@
     path: "/etc/haproxy/conf.d/{{ service.haproxy_service_name }}"
     state: absent
   notify: Regenerate haproxy configuration
-  # NOTE(damiandabrowski): _haproxy_service_configs_simplified should be replaced
-  # with haproxy_service_configs in 2024.1.
-  loop: "{{ _haproxy_service_configs_simplified }}"
+  loop: "{{ haproxy_service_configs }}"
   loop_control:
     loop_var: service
   when:
@@ -74,11 +59,9 @@
     owner: root
     group: haproxy
     mode: "0750"
-  # NOTE(damiandabrowski): _haproxy_service_configs_simplified should be replaced
-  # with haproxy_service_configs in 2024.1.
   loop: >-
     {{
-      _haproxy_service_configs_simplified | selectattr('haproxy_map_entries', 'defined') | map(attribute='haproxy_map_entries') | flatten |
+      haproxy_service_configs | selectattr('haproxy_map_entries', 'defined') | map(attribute='haproxy_map_entries') | flatten |
       map(attribute='name') | unique
     }}
 
@@ -92,10 +75,8 @@
     owner: root
     group: haproxy
     mode: "0640"
-  # NOTE(damiandabrowski): _haproxy_service_configs_simplified should be replaced
-  # with haproxy_service_configs in 2024.1.
   with_subelements:
-    - "{{ _haproxy_service_configs_simplified | selectattr('haproxy_map_entries', 'defined') }}"
+    - "{{ haproxy_service_configs | selectattr('haproxy_map_entries', 'defined') }}"
     - haproxy_map_entries
   when:
     - (item.0.haproxy_service_enabled | default(True)) | bool
@@ -112,10 +93,8 @@
     - (item.0.haproxy_service_enabled | default('True')) | bool is falsy or
       (item.0.state is defined and item.0.state == 'absent') or
       (item.1.state | default('present') == 'absent')
-  # NOTE(damiandabrowski): _haproxy_service_configs_simplified should be replaced
-  # with haproxy_service_configs in 2024.1.
   with_subelements:
-    - "{{ _haproxy_service_configs_simplified | selectattr('haproxy_map_entries', 'defined') }}"
+    - "{{ haproxy_service_configs | selectattr('haproxy_map_entries', 'defined') }}"
     - haproxy_map_entries
   notify: Regenerate maps
   register: map_delete
diff --git a/tests/test-vars.yml b/tests/test-vars.yml
index 37b56f7..50b78e5 100644
--- a/tests/test-vars.yml
+++ b/tests/test-vars.yml
@@ -3,40 +3,36 @@ external_lb_vip_address: 127.0.0.1
 internal_lb_vip_address: 127.0.0.1
 haproxy_pki_setup_host: "{{ inventory_hostname }}"
 haproxy_service_configs:
-  - service:
-      haproxy_service_name: test_group
-      haproxy_backend_nodes: "{{ groups['haproxy_all'] | default([]) }}"
-      haproxy_port: 8180
-      haproxy_backend_port: 22
-      haproxy_ssl: False
-      haproxy_balance_type: tcp
-      haproxy_backend_options:
-        - tcp-check
-  - service:
-      haproxy_service_name: test_list
-      haproxy_backend_nodes:
-        - name: "localhost"
-          ip_addr: "127.0.0.1"
-      haproxy_port: 8181
-      haproxy_backend_port: 22
-      haproxy_ssl: False
-      haproxy_balance_type: tcp
-      haproxy_backend_options:
-        - tcp-check
-  - service:
-      haproxy_service_name: test_backend_ssl
-      haproxy_backend_nodes: "{{ groups['haproxy_all'] | default([]) }}"
-      haproxy_port: 8180
-      haproxy_backend_port: 443
-      haproxy_backend_ssl: True
-      haproxy_backend_ca: False
-      haproxy_ssl: False
-      haproxy_balance_type: http
-  - service:
-      haproxy_service_name: test_absent_service
-      haproxy_backend_nodes:
-        - name: "localhost"
-          ip_addr: "127.0.0.1"
-      haproxy_port: 65535
-      haproxy_balance_type: tcp
-      state: present
+  - haproxy_service_name: test_group
+    haproxy_backend_nodes: "{{ groups['haproxy_all'] | default([]) }}"
+    haproxy_port: 8180
+    haproxy_backend_port: 22
+    haproxy_ssl: False
+    haproxy_balance_type: tcp
+    haproxy_backend_options:
+      - tcp-check
+  - haproxy_service_name: test_list
+    haproxy_backend_nodes:
+      - name: "localhost"
+        ip_addr: "127.0.0.1"
+    haproxy_port: 8181
+    haproxy_backend_port: 22
+    haproxy_ssl: False
+    haproxy_balance_type: tcp
+    haproxy_backend_options:
+      - tcp-check
+  - haproxy_service_name: test_backend_ssl
+    haproxy_backend_nodes: "{{ groups['haproxy_all'] | default([]) }}"
+    haproxy_port: 8180
+    haproxy_backend_port: 443
+    haproxy_backend_ssl: True
+    haproxy_backend_ca: False
+    haproxy_ssl: False
+    haproxy_balance_type: http
+  - haproxy_service_name: test_absent_service
+    haproxy_backend_nodes:
+      - name: "localhost"
+        ip_addr: "127.0.0.1"
+    haproxy_port: 65535
+    haproxy_balance_type: tcp
+    state: present