diff --git a/nixos/packages.nix b/nixos/packages.nix
index f4ef553..6145643 100644
--- a/nixos/packages.nix
+++ b/nixos/packages.nix
@@ -154,6 +154,7 @@
     python3Packages.debugpy # Debug Adapter Protocol for Python
     pyright # Python LSP
     ruff # Extremely fast Python linter
+    uv # Fast package manager
 
     # C/C++
     clang-tools # Clangd? LSP
@@ -177,6 +178,7 @@
     delve # Go debugger
     templ # A language for writing HTML user interfaces in Go. 
     golangci-lint # Fast linters Runner for Go
+    graphviz # Graph visualisation tool
 
     # Nix
     nixd # Nix LSP. Нет в mason