diff --git a/client/rest-high-level/src/test/java/org/opensearch/client/documentation/IndicesClientDocumentationIT.java b/client/rest-high-level/src/test/java/org/opensearch/client/documentation/IndicesClientDocumentationIT.java
index ad2b0d1e603bb..ad35f2968fbd7 100644
--- a/client/rest-high-level/src/test/java/org/opensearch/client/documentation/IndicesClientDocumentationIT.java
+++ b/client/rest-high-level/src/test/java/org/opensearch/client/documentation/IndicesClientDocumentationIT.java
@@ -1033,7 +1033,7 @@ public void testSyncedFlushIndex() throws Exception {
 
             // tag::flush-synced-execute
             SyncedFlushResponse flushSyncedResponse = client.indices().flushSynced(request, expectWarnings(
-                "Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead."
+                "Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead."
             ));
             // end::flush-synced-execute
 
@@ -1079,7 +1079,7 @@ public void onFailure(Exception e) {
 
             // tag::flush-synced-execute-async
             client.indices().flushSyncedAsync(request, expectWarnings(
-                "Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead."
+                "Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead."
             ), listener); // <1>
             // end::flush-synced-execute-async
 
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.flush/10_basic.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.flush/10_basic.yml
index 781d133153605..ecd4406f596a5 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/indices.flush/10_basic.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/indices.flush/10_basic.yml
@@ -17,7 +17,7 @@
         wait_for_status: green
   - do:
       allowed_warnings:
-        - Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead.
+        - Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead.
       indices.flush_synced:
         index: testing
 
diff --git a/server/src/main/java/org/opensearch/indices/flush/SyncedFlushService.java b/server/src/main/java/org/opensearch/indices/flush/SyncedFlushService.java
index 1b9a3f6f97440..d1192d728d325 100644
--- a/server/src/main/java/org/opensearch/indices/flush/SyncedFlushService.java
+++ b/server/src/main/java/org/opensearch/indices/flush/SyncedFlushService.java
@@ -96,7 +96,7 @@ public class SyncedFlushService implements IndexEventListener {
     private static final DeprecationLogger DEPRECATION_LOGGER = DeprecationLogger.getLogger(logger.getName());
 
     public static final String SYNCED_FLUSH_DEPRECATION_MESSAGE =
-        "Synced flush is deprecated and will be removed in 8.0. Use flush at _/flush or /{index}/_flush instead.";
+        "Synced flush is deprecated and will be removed in 3.0. Use flush at _/flush or /{index}/_flush instead.";
 
     private static final String PRE_SYNCED_FLUSH_ACTION_NAME = "internal:indices/flush/synced/pre";
     private static final String SYNCED_FLUSH_ACTION_NAME = "internal:indices/flush/synced/sync";