diff --git a/docs/changelog/119131.yaml b/docs/changelog/119131.yaml
new file mode 100644
index 0000000000000..2628b6184f90d
--- /dev/null
+++ b/docs/changelog/119131.yaml
@@ -0,0 +1,5 @@
+pr: 119131
+summary: Expose BwC enrich cache setting in plugin
+area: Ingest Node
+type: bug
+issues: []
diff --git a/x-pack/plugin/enrich/src/main/java/org/elasticsearch/xpack/enrich/EnrichPlugin.java b/x-pack/plugin/enrich/src/main/java/org/elasticsearch/xpack/enrich/EnrichPlugin.java
index ef455acb645d9..16bc81785f53a 100644
--- a/x-pack/plugin/enrich/src/main/java/org/elasticsearch/xpack/enrich/EnrichPlugin.java
+++ b/x-pack/plugin/enrich/src/main/java/org/elasticsearch/xpack/enrich/EnrichPlugin.java
@@ -308,7 +308,8 @@ public List<Setting<?>> getSettings() {
             COORDINATOR_PROXY_MAX_LOOKUPS_PER_REQUEST,
             COORDINATOR_PROXY_QUEUE_CAPACITY,
             ENRICH_MAX_FORCE_MERGE_ATTEMPTS,
-            CACHE_SIZE
+            CACHE_SIZE,
+            CACHE_SIZE_BWC
         );
     }