diff --git a/ersilia/hub/content/metadata/license.txt b/ersilia/hub/content/metadata/license.txt
index a1f9bc1a..b47cbdec 100644
--- a/ersilia/hub/content/metadata/license.txt
+++ b/ersilia/hub/content/metadata/license.txt
@@ -1,3 +1,4 @@
+GPL-3.0
 MIT
 GPL-3.0-only
 GPL-3.0-or-later
@@ -13,4 +14,4 @@ CC-BY-3.0
 CC-BY-4.0
 Proprietary
 Non-commercial
-None
\ No newline at end of file
+None