diff --git a/.gitlab-image-tags.yml b/.gitlab-image-tags.yml
index c229ed9e7d..751d6cfa02 100644
--- a/.gitlab-image-tags.yml
+++ b/.gitlab-image-tags.yml
@@ -13,6 +13,6 @@ variables:
 
   LINT_TAG: '2024-02-20.0'
 
-  ABI_CHECK_TAG: '2024-12-04.0'
+  ABI_CHECK_TAG: '2024-12-09.0'
 
   WINDOWS_TAG: '2024-11-29.0'
diff --git a/girs/GstAnalytics-1.0.gir b/girs/GstAnalytics-1.0.gir
index 3dbbdaafd4..7fc10dfe31 100644
--- a/girs/GstAnalytics-1.0.gir
+++ b/girs/GstAnalytics-1.0.gir
@@ -353,7 +353,12 @@ identified by @id is stored.</doc>
       </member>
       <member name="relate_to" value="8" c:identifier="GST_ANALYTICS_REL_TYPE_RELATE_TO">
       </member>
-      <member name="last" value="16" c:identifier="GST_ANALYTICS_REL_TYPE_LAST">
+      <member name="n_to_n" value="16" c:identifier="GST_ANALYTICS_REL_TYPE_N_TO_N">
+        <doc xml:space="preserve" filename="../subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h">Used to express relations between two groups
+   where each group's components correspond to the respective component in the
+   other group. Since: 1.26</doc>
+      </member>
+      <member name="last" value="32" c:identifier="GST_ANALYTICS_REL_TYPE_LAST">
         <doc xml:space="preserve" filename="../subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h">reserved</doc>
       </member>
       <member name="any" value="2147483647" c:identifier="GST_ANALYTICS_REL_TYPE_ANY">
diff --git a/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.c b/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.c
index 4877f6808a..da2f1c7b6e 100644
--- a/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.c
+++ b/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.c
@@ -649,7 +649,7 @@ gboolean
 gst_analytics_relation_meta_set_relation (GstAnalyticsRelationMeta * meta,
     GstAnalyticsRelTypes type, guint an_meta_first_id, guint an_meta_second_id)
 {
-  g_return_val_if_fail (type < GST_ANALYTICS_REL_TYPE_LAST, FALSE);
+  g_return_val_if_fail (type <= 0xFF, FALSE);
   g_return_val_if_fail (meta, FALSE);
   if (an_meta_first_id >= meta->rel_order
       || an_meta_second_id >= meta->rel_order) {
diff --git a/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h b/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h
index 1bb761c097..a6e9ab816b 100644
--- a/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h
+++ b/subprojects/gst-plugins-bad/gst-libs/gst/analytics/gstanalyticsmeta.h
@@ -169,8 +169,10 @@ GstAnalyticsRelationMetaInitParams;
  * @GST_ANALYTICS_REL_TYPE_NONE: No relation
  * @GST_ANALYTICS_REL_TYPE_IS_PART_OF: First analysis-meta is part of second analysis-meta
  * @GST_ANALYTICS_REL_TYPE_CONTAIN: First analysis-meta contain second analysis-meta.
- * @GST_ANALYTICS_REL_TYPE_RELATE: First analysis-meta relate to second analysis-meta.
- * @GST_ANALYTICS_REL_TYPE_LAST: reserved
+ * @GST_ANALYTICS_REL_TYPE_RELATE_TO: First analysis-meta relate to second analysis-meta.
+ * @GST_ANALYTICS_REL_TYPE_N_TO_N: Used to express relations between two groups
+ *    where each group's components correspond to the respective component in the
+ *    other group. Since: 1.26
  * @GST_ANALYTICS_REL_TYPE_ANY: Only use for criteria.
  *
  * Since: 1.24
@@ -181,7 +183,15 @@ typedef enum
   GST_ANALYTICS_REL_TYPE_IS_PART_OF = (1 << 1),
   GST_ANALYTICS_REL_TYPE_CONTAIN = (1 << 2),
   GST_ANALYTICS_REL_TYPE_RELATE_TO = (1 << 3),
-  GST_ANALYTICS_REL_TYPE_LAST = (1 << 4),
+  /**
+   * GST_ANALYTICS_REL_TYPE_N_TO_N:
+   *
+   * Used to express relations between two groups where each group's components
+   * correspond to the respective component in the other group.
+   *
+   * Since: 1.26
+   */
+  GST_ANALYTICS_REL_TYPE_N_TO_N = (1 << 4),
   GST_ANALYTICS_REL_TYPE_ANY = G_MAXINT
 } GstAnalyticsRelTypes;