diff --git a/.idx/dev.nix b/.idx/dev.nix
index dfbfd4c..88f9209 100644
--- a/.idx/dev.nix
+++ b/.idx/dev.nix
@@ -9,6 +9,7 @@
     autoconf
     clang
     clang-tools
+    cmake
     ed
     fira-code-nerdfont
     gcc
@@ -23,6 +24,7 @@
     lldb
     m4
     neovim
+    ninja
     openssh
     perl
     pkg-config