diff --git a/server/src/main/java/org/elasticsearch/cluster/metadata/IndexMetaData.java b/server/src/main/java/org/elasticsearch/cluster/metadata/IndexMetaData.java
index d5eec608b549e..82bcf2001b352 100644
--- a/server/src/main/java/org/elasticsearch/cluster/metadata/IndexMetaData.java
+++ b/server/src/main/java/org/elasticsearch/cluster/metadata/IndexMetaData.java
@@ -262,7 +262,7 @@ public Iterator<Setting<?>> settings() {
      * normal wildcard searches unless explicitly allowed
      */
     public static final Setting<Boolean> INDEX_HIDDEN_SETTING =
-        Setting.boolSetting(SETTING_INDEX_HIDDEN, false, Property.IndexScope, Property.Final);
+        Setting.boolSetting(SETTING_INDEX_HIDDEN, false, Property.Dynamic, Property.IndexScope);
 
     /**
      * an internal index format description, allowing us to find out if this index is upgraded or needs upgrading
diff --git a/server/src/test/java/org/elasticsearch/index/HiddenIndexIT.java b/server/src/test/java/org/elasticsearch/index/HiddenIndexIT.java
index ca4fa588b144a..56637cd3735cc 100644
--- a/server/src/test/java/org/elasticsearch/index/HiddenIndexIT.java
+++ b/server/src/test/java/org/elasticsearch/index/HiddenIndexIT.java
@@ -77,6 +77,15 @@ public void testHiddenIndexSearch() {
             .get();
         matchedHidden = Arrays.stream(searchResponse.getHits().getHits()).anyMatch(hit -> ".hidden-index".equals(hit.getIndex()));
         assertTrue(matchedHidden);
+
+        // make index not hidden
+        assertAcked(client().admin().indices().prepareUpdateSettings("hidden-index")
+            .setSettings(Settings.builder().put("index.hidden", false).build())
+            .get());
+        searchResponse =
+            client().prepareSearch(randomFrom("*", "_all", "h*", "*index")).setSize(1000).setQuery(QueryBuilders.matchAllQuery()).get();
+        matchedHidden = Arrays.stream(searchResponse.getHits().getHits()).anyMatch(hit -> "hidden-index".equals(hit.getIndex()));
+        assertTrue(matchedHidden);
     }
 
     public void testGlobalTemplatesDoNotApply() {
diff --git a/x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowAction.java b/x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowAction.java
index 75f8ff59d1fa5..422bc55087577 100644
--- a/x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowAction.java
+++ b/x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowAction.java
@@ -364,6 +364,7 @@ static String[] extractLeaderShardHistoryUUIDs(Map<String, String> ccrIndexMetaD
             IndexMetaData.INDEX_BLOCKS_READ_ONLY_ALLOW_DELETE_SETTING,
             IndexMetaData.INDEX_PRIORITY_SETTING,
             IndexMetaData.SETTING_WAIT_FOR_ACTIVE_SHARDS,
+            IndexMetaData.INDEX_HIDDEN_SETTING,
             EnableAllocationDecider.INDEX_ROUTING_REBALANCE_ENABLE_SETTING,
             EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING,
             ShardsLimitAllocationDecider.INDEX_TOTAL_SHARDS_PER_NODE_SETTING,