diff --git a/src/main/java/org/codelibs/fess/es/client/SearchEngineClient.java b/src/main/java/org/codelibs/fess/es/client/SearchEngineClient.java
index 8a320b6f6..0436ad372 100644
--- a/src/main/java/org/codelibs/fess/es/client/SearchEngineClient.java
+++ b/src/main/java/org/codelibs/fess/es/client/SearchEngineClient.java
@@ -55,6 +55,7 @@ import org.codelibs.curl.CurlResponse;
 import org.codelibs.fesen.client.EngineInfo;
 import org.codelibs.fesen.client.HttpClient;
 import org.codelibs.fess.Constants;
+import org.codelibs.fess.app.web.base.login.FessLoginAssist;
 import org.codelibs.fess.entity.FacetInfo;
 import org.codelibs.fess.entity.GeoInfo;
 import org.codelibs.fess.entity.HighlightInfo;
@@ -717,8 +718,13 @@ public class SearchEngineClient implements Client {
                                 mapper.readValue(prev, new TypeReference<Map<String, Map<String, String>>>() {
                                 });
                         if (result.containsKey("index")) {
+                            String source = line;
+                            if ("fess_user.user".equals(configIndex)) {
+                                source = source.replace("${fess.index.initial_password}", ComponentUtil.getComponent(FessLoginAssist.class)
+                                        .encryptPassword(fessConfig.getIndexUserInitialPassword()));
+                            }
                             final IndexRequestBuilder requestBuilder = client.prepareIndex().setIndex(configIndex)
-                                    .setId(result.get("index").get("_id")).setSource(line, XContentType.JSON);
+                                    .setId(result.get("index").get("_id")).setSource(source, XContentType.JSON);
                             builder.add(requestBuilder);
                         }
                     }
diff --git a/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java b/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
index dc4fd1271..e9229d3ea 100644
--- a/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
+++ b/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
@@ -538,6 +538,9 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
     /** The key of the configuration. e.g. SHA-512 */
     String INDEX_ID_DIGEST_ALGORITHM = "index.id.digest.algorithm";
 
+    /** The key of the configuration. e.g. admin */
+    String INDEX_USER_initial_password = "index.user.initial_password";
+
     /** The key of the configuration. e.g. favorite_count */
     String INDEX_FIELD_favorite_count = "index.field.favorite_count";
 
@@ -3506,6 +3509,13 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
      */
     String getIndexIdDigestAlgorithm();
 
+    /**
+     * Get the value for the key 'index.user.initial_password'. <br>
+     * The value is, e.g. admin <br>
+     * @return The value of found property. (NotNull: if not found, exception but basically no way)
+     */
+    String getIndexUserInitialPassword();
+
     /**
      * Get the value for the key 'index.field.favorite_count'. <br>
      * The value is, e.g. favorite_count <br>
@@ -8463,6 +8473,10 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
             return get(FessConfig.INDEX_ID_DIGEST_ALGORITHM);
         }
 
+        public String getIndexUserInitialPassword() {
+            return get(FessConfig.INDEX_USER_initial_password);
+        }
+
         public String getIndexFieldFavoriteCount() {
             return get(FessConfig.INDEX_FIELD_favorite_count);
         }
@@ -10786,6 +10800,7 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
             defaultMap.put(FessConfig.INDEX_number_of_shards, "5");
             defaultMap.put(FessConfig.INDEX_auto_expand_replicas, "0-1");
             defaultMap.put(FessConfig.INDEX_ID_DIGEST_ALGORITHM, "SHA-512");
+            defaultMap.put(FessConfig.INDEX_USER_initial_password, "admin");
             defaultMap.put(FessConfig.INDEX_FIELD_favorite_count, "favorite_count");
             defaultMap.put(FessConfig.INDEX_FIELD_click_count, "click_count");
             defaultMap.put(FessConfig.INDEX_FIELD_config_id, "config_id");
diff --git a/src/main/resources/fess_config.properties b/src/main/resources/fess_config.properties
index 1ccb0f93d..56ad0c9e3 100644
--- a/src/main/resources/fess_config.properties
+++ b/src/main/resources/fess_config.properties
@@ -289,6 +289,7 @@ index.codec=default
 index.number_of_shards=5
 index.auto_expand_replicas=0-1
 index.id.digest.algorithm=SHA-512
+index.user.initial_password=admin
 
 # field names
 index.field.favorite_count=favorite_count
diff --git a/src/main/resources/fess_indices/fess_user.user/user.bulk b/src/main/resources/fess_indices/fess_user.user/user.bulk
index 02eb44a95..c6f98ba3e 100644
--- a/src/main/resources/fess_indices/fess_user.user/user.bulk
+++ b/src/main/resources/fess_indices/fess_user.user/user.bulk
@@ -1,2 +1,2 @@
 {"index":{"_index":"fess_user.user","_id":"YWRtaW4="}}
-{"password":"8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918","surname":"admin","roles":["YWRtaW4=","Z3Vlc3Q="],"name":"admin"}
+{"password":"${fess.index.initial_password}","surname":"admin","roles":["YWRtaW4=","Z3Vlc3Q="],"name":"admin"}