diff --git a/sqlparse/keywords.py b/sqlparse/keywords.py
index 4f2050e2..26dd3b38 100644
--- a/sqlparse/keywords.py
+++ b/sqlparse/keywords.py
@@ -843,6 +843,7 @@ def is_keyword(value):
     'PLPGSQL': tokens.Keyword,
     'INHERIT': tokens.Keyword,
     'INDEXES': tokens.Keyword,
+    'ON_ERROR_STOP': tokens.Keyword,
 
     'BYTEA': tokens.Keyword,
     'BIGSERIAL': tokens.Keyword,