diff --git a/src/data/cdot/json.rs b/src/data/cdot/json.rs
index 663a80c..fbfb1c1 100644
--- a/src/data/cdot/json.rs
+++ b/src/data/cdot/json.rs
@@ -398,6 +398,8 @@ pub mod models {
         RRna,
         #[serde(rename = "rRNA_pseudogene")]
         RnaPseudogene,
+        #[serde(rename = "selenoprotein")]
+        Selenoprotein,
         #[serde(rename = "sense_intronic")]
         SenseIntronic,
         #[serde(rename = "sense_overlapping")]
@@ -990,6 +992,10 @@ impl TxProvider {
                 .unwrap_or_default()
                 .contains(needle)
         });
+        let is_selenoprotein = is_selenoprotein
+            || tx.biotype.as_ref().map_or(false, |bt| {
+                bt.contains(&crate::data::cdot::json::models::BioType::Selenoprotein)
+            });
 
         let hgnc = tx
             .gene_name