diff --git a/oscar/configuration.nix b/oscar/configuration.nix
index 725caa1..f68069b 100644
--- a/oscar/configuration.nix
+++ b/oscar/configuration.nix
@@ -133,6 +133,7 @@
       musescore
       prusa-slicer
       qgis
+      tenacity
 
       # games
       bolt-launcher