1 files changed, 1 insertions, 0 deletions
diff --git a/license.md b/license.md
index 7f3e05cf..c1685175 100644
--- a/license.md
+++ b/license.md
@@ -1270,6 +1270,7 @@ File | Artists | Licenses
 `sfx/env/env-waterfall1.ogg` | Dariuna | GPLv2
 `sfx/env/fart.ogg` | unknown | CC0
 `sfx/env/flame.ogg` | Ledmitz | GPLv2, CC BY-SA 3.0
+`sfx/env/rubber_duck.ogg` | Ledmitz | GPLv2, CC0
 `sfx/env/spawn_burst.ogg` | Ledmitz | GPLv2, CC BY-SA 3.0
 `sfx/env/tiny_bell.ogg` | SamuelGremaud, Ledmitz | CC0
 `sfx/env/zap.ogg` | Ledmitz | GPLv2, CC BY-SA 3.0