diff --git a/sql/openalex_ids.sql b/sql/openalex_ids.sql
index 59f629a..a5897a7 100644
--- a/sql/openalex_ids.sql
+++ b/sql/openalex_ids.sql
@@ -6,4 +6,7 @@ WHERE
   (type IS NULL)
   OR NOT (type IN ("dataset",
       "peer-review",
-      "grant"))
+      "grant",
+      "supplementary-materials",
+      "editorial",
+      "letter"))
diff --git a/sql/openalex_metadata.sql b/sql/openalex_metadata.sql
index 5979fa2..5472dda 100644
--- a/sql/openalex_metadata.sql
+++ b/sql/openalex_metadata.sql
@@ -37,4 +37,7 @@ WHERE
   (type IS NULL)
   OR NOT (type IN ("dataset",
       "peer-review",
-      "grant"))
+      "grant",
+      "supplementary-materials",
+      "editorial",
+      "letter"))