diff --git a/src/Illuminate/Database/Query/Grammars/PostgresGrammar.php b/src/Illuminate/Database/Query/Grammars/PostgresGrammar.php
index 77123fe3d748..641c6ac06895 100755
--- a/src/Illuminate/Database/Query/Grammars/PostgresGrammar.php
+++ b/src/Illuminate/Database/Query/Grammars/PostgresGrammar.php
@@ -16,7 +16,7 @@ class PostgresGrammar extends Grammar
     protected $operators = [
         '=', '<', '>', '<=', '>=', '<>', '!=',
         'like', 'not like', 'between', 'ilike',
-        '&', '|', '#', '<<', '>>',
+        '&', '|', '#', '<<', '>>', '>>=', '=<<',
         '@>', '<@', '?', '?|', '?&', '||', '-', '-', '#-',
     ];