diff --git a/gluon/packages/dal b/gluon/packages/dal
index 87ea82ad..51092db2 160000
--- a/gluon/packages/dal
+++ b/gluon/packages/dal
@@ -1 +1 @@
-Subproject commit 87ea82ada99f886a2b9c085bbbd90977fbd80684
+Subproject commit 51092db2549ccaab0cb74b49c0c71864fb350476
diff --git a/gluon/validators.py b/gluon/validators.py
index 03b18cc3..88954b04 100644
--- a/gluon/validators.py
+++ b/gluon/validators.py
@@ -1,3 +1,43 @@
-from pydal.validators import __all__
+__all__ = [
+    'ANY_OF',
+    'CLEANUP',
+    'CRYPT',
+    'IS_ALPHANUMERIC',
+    'IS_DATE_IN_RANGE',
+    'IS_DATE',
+    'IS_DATETIME_IN_RANGE',
+    'IS_DATETIME',
+    'IS_DECIMAL_IN_RANGE',
+    'IS_EMAIL',
+    'IS_GENERIC_URL',
+    'IS_LIST_OF_EMAILS',
+    'IS_EMPTY_OR',
+    'IS_EXPR',
+    'IS_FLOAT_IN_RANGE',
+    'IS_IMAGE',
+    'IS_IN_DB',
+    'IS_IN_SET',
+    'IS_INT_IN_RANGE',
+    'IS_IPV4',
+    'IS_IPV6',
+    'IS_IPADDRESS',
+    'IS_HTTP_URL',
+    'IS_LENGTH',
+    'IS_LIST_OF',
+    'IS_LOWER',
+    'IS_MATCH',
+    'IS_EQUAL_TO',
+    'IS_NOT_EMPTY',
+    'IS_NOT_IN_DB',
+    'IS_NULL_OR',
+    'IS_SLUG',
+    'IS_STRONG',
+    'IS_TIME',
+    'IS_UPLOAD_FILENAME',
+    'IS_UPPER',
+    'IS_URL',
+    'IS_JSON',
+]
+
 from pydal.validators import *