diff --git a/modules/apps/dev/default.nix b/modules/apps/dev/default.nix
index 82f2fdb..a30cfd0 100644
--- a/modules/apps/dev/default.nix
+++ b/modules/apps/dev/default.nix
@@ -27,6 +27,7 @@ in {
       jetbrains.rider
       jetbrains.rust-rover
       jetbrains.webstorm
+      libqalculate
       mermaid-cli
       mono
       nodejs_22