diff --git a/src/sqlfluff/dialects/dialect_bigquery.py b/src/sqlfluff/dialects/dialect_bigquery.py
index bab8ffcb5a6..ea9c4f2d1a0 100644
--- a/src/sqlfluff/dialects/dialect_bigquery.py
+++ b/src/sqlfluff/dialects/dialect_bigquery.py
@@ -252,6 +252,8 @@
         # Add in semi structured expressions
         Ref("SemiStructuredAccessorSegment"),
     ),
+    PrimaryKeyGrammar=Nothing(),
+    ForeignKeyGrammar=Nothing(),
 )