diff --git a/application/Espo/ORM/QueryComposer/BaseQueryComposer.php b/application/Espo/ORM/QueryComposer/BaseQueryComposer.php
index 853db49cf2..a60799ace4 100644
--- a/application/Espo/ORM/QueryComposer/BaseQueryComposer.php
+++ b/application/Espo/ORM/QueryComposer/BaseQueryComposer.php
@@ -2032,7 +2032,7 @@ abstract class BaseQueryComposer implements QueryComposer
         $forUpdate = $params['forUpdate'] ?? null;
 
         if ($forShare) {
-            return "FOR SHARE";
+            return "LOCK IN SHARE MODE";
         }
 
         if ($forUpdate) {
diff --git a/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php b/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
index f277930670..3760e52263 100644
--- a/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
+++ b/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
@@ -591,4 +591,23 @@ class PostgresqlQueryComposer extends BaseQueryComposer
 
         return $sql;
     }
+
+    /**
+     * @param array<string, mixed> $params
+     */
+    protected function getSelectTailPart(array $params): ?string
+    {
+        $forShare = $params['forShare'] ?? null;
+        $forUpdate = $params['forUpdate'] ?? null;
+
+        if ($forShare) {
+            return "FOR SHARE";
+        }
+
+        if ($forUpdate) {
+            return "FOR UPDATE";
+        }
+
+        return null;
+    }
 }
diff --git a/tests/unit/Espo/ORM/MysqlQueryComposerTest.php b/tests/unit/Espo/ORM/MysqlQueryComposerTest.php
index 3b5e7507b1..055f1e9939 100644
--- a/tests/unit/Espo/ORM/MysqlQueryComposerTest.php
+++ b/tests/unit/Espo/ORM/MysqlQueryComposerTest.php
@@ -3031,7 +3031,7 @@ class MysqlQueryComposerTest extends \PHPUnit\Framework\TestCase
         $expectedSql =
             "SELECT account.id AS `id` ".
             "FROM `account` ".
-            "FOR SHARE";
+            "LOCK IN SHARE MODE";
 
         $this->assertEquals($expectedSql, $sql);
     }