diff --git a/proto/substrait/type.proto b/proto/substrait/type.proto
index ef5ebd277..d33624738 100644
--- a/proto/substrait/type.proto
+++ b/proto/substrait/type.proto
@@ -34,7 +34,7 @@ message Type {
     VarChar varchar = 22;
     FixedBinary fixed_binary = 23;
     Decimal decimal = 24;
-    Timestamp timestamp = 32;
+    Timestamp timestamp = 33;
 
     Struct struct = 25;
     List list = 27;