diff --git a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_datetime.py b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_datetime.py
index f5c2010e3..816bf43e9 100644
--- a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_datetime.py
+++ b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_datetime.py
@@ -170,7 +170,7 @@ def _datetrunc2_yql_impl(date_ctx, unit_ctx):  # type: ignore
     # today
     base.FuncToday(
         variants=[
-            V(D.YQL, sa.func.CurrentUtcDate),  # https://yql.yandex-team.ru/docs/ydb/misc/not_yet_supported
+            V(D.YQL, sa.func.CurrentUtcDate),  # https://ydb.tech/en/docs/yql/reference/syntax/not_yet_supported#now
         ]
     ),
     # week
diff --git a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_string.py b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_string.py
index c31a6b3b3..74310c529 100644
--- a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_string.py
+++ b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/functions_string.py
@@ -144,12 +144,10 @@
     ),
     # regexp_extract
     # TODO: YQL
-    # https://yql.yandex-team.ru/docs/ydb/udf/list/hyperscan
-    # Problem:
-    # “По умолчанию все функции работают в однобайтовом режиме, но если
-    # регулярное выражение является валидной UTF-8 строкой, но не является
-    # валидной ASCII строкой, — автоматически включается режим UTF-8.”
-    # Problem: can't use higher-order functions yet.
+    # https://ydb.tech/en/docs/yql/reference/udf/list/hyperscan
+    # Problem: "By default, all functions work in the single-byte mode.
+    # However, if the regular expression is a valid UTF-8 string but is not a valid ASCII string,
+    # the UTF-8 mode is enabled automatically." However, we can't use higher-order functions yet.
     # replace
     base.FuncReplace(
         variants=[
diff --git a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/operators_binary.py b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/operators_binary.py
index 8ec6cb311..3a3ab1a96 100644
--- a/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/operators_binary.py
+++ b/lib/dl_connector_ydb/dl_connector_ydb/formula/definitions/operators_binary.py
@@ -104,7 +104,7 @@
     # /
     base.BinaryDivInt(
         variants=[
-            # See also: https://yql.yandex-team.ru/docs/ydb/?singlePage=true#_syntax_pragma_classicdivision
+            # See also: https://ydb.tech/en/docs/yql/reference/syntax/pragma#classicdivision
             V(D.YQL, lambda x, y: sa.cast(x, sa.FLOAT) / y),
         ]
     ),