diff --git a/technic/README.md b/technic/README.md
index b6aa05f..e5adf31 100644
--- a/technic/README.md
+++ b/technic/README.md
@@ -25,3 +25,11 @@ RealBadAngel: (WTFPL)
   * Everything else.
 
 CC BY-SA 3.0: <http://creativecommons.org/licenses/by-sa/3.0/>
+
+Sound licenses:
+
+veikk0 (Veikko Mäkelä) (CC BY-SA 4.0):
+  * technic_hv_nuclear_reactor_siren_danger_loop.ogg
+    * Derived from "Nuclear alarm.wav" by Freesound.org user rene___ from <https://freesound.org/people/rene___/sounds/56778/>. Originally licensed under CC0 1.0 <https://creativecommons.org/publicdomain/zero/1.0/>
+
+CC BY-SA 4.0: <https://creativecommons.org/licenses/by-sa/4.0/>
\ No newline at end of file
diff --git a/technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg b/technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg
index 3d290b0..1f21a16 100644
Binary files a/technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg and b/technic/sounds/technic_hv_nuclear_reactor_siren_danger_loop.ogg differ