diff --git a/namespace-resolver/identifier-prefixes.yaml b/namespace-resolver/identifier-prefixes.yaml
index 42dd75b..ef75238 100644
--- a/namespace-resolver/identifier-prefixes.yaml
+++ b/namespace-resolver/identifier-prefixes.yaml
@@ -1,8 +1,11 @@
 prefixes:
+  - SC:
+      name: refget sequence collection
+      documentation: https://ga4gh.github.io/refget/seqcols/#seqcol-protocol-functionality
   - SQ:
       name: refget sequence
       documentation: https://ga4gh.github.io/refget/sequences/#refget-checksum-algorithm
   - VA:
       name: VRS Allele
       documentation: https://vrs.ga4gh.org/en/stable/concepts/MolecularVariation/Allele.html
-      schema: https://w3id.org/ga4gh/schema/vrs/2.0/json/Allele
\ No newline at end of file
+      schema: https://w3id.org/ga4gh/schema/vrs/2.0/json/Allele