diff --git a/jupyter/flake.nix b/jupyter/flake.nix
index cb8b521..5b473b3 100644
--- a/jupyter/flake.nix
+++ b/jupyter/flake.nix
@@ -21,6 +21,7 @@
           [python311 virtualenv]
           ++ (with pkgs.python311Packages; [
             pip
+            python-lsp-server
             venvShellHook
             requests
             jupyter
diff --git a/nix/flake.nix b/nix/flake.nix
index a2a6d75..3ddc58d 100644
--- a/nix/flake.nix
+++ b/nix/flake.nix
@@ -3,26 +3,29 @@
 
   inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
 
-  outputs = { self, nixpkgs }:
-    let
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
-        pkgs = import nixpkgs { inherit system; };
-      });
-    in
-    {
-      devShells = forEachSupportedSystem ({ pkgs }: {
-        default = pkgs.mkShell {
-          packages = with pkgs; [
-            cachix
-            lorri
-            niv
-            nixfmt-classic
-            statix
-            vulnix
-            haskellPackages.dhall-nix
-          ];
-        };
-      });
-    };
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forEachSupportedSystem = f:
+      nixpkgs.lib.genAttrs supportedSystems (system:
+        f {
+          pkgs = import nixpkgs {inherit system;};
+        });
+  in {
+    devShells = forEachSupportedSystem ({pkgs}: {
+      default = pkgs.mkShell {
+        packages = with pkgs; [
+          cachix
+          lorri
+          niv
+          alejandra
+          statix
+          vulnix
+          haskellPackages.dhall-nix
+        ];
+      };
+    });
+  };
 }
diff --git a/python/flake.nix b/python/flake.nix
index 2f657e8..e89eb1f 100644
--- a/python/flake.nix
+++ b/python/flake.nix
@@ -3,23 +3,28 @@
 
   inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
 
-  outputs = { self, nixpkgs }:
-    let
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
-        pkgs = import nixpkgs { inherit system; };
-      });
-    in
-    {
-      devShells = forEachSupportedSystem ({ pkgs }: {
-        default = pkgs.mkShell {
-          venvDir = "venv";
-          packages = with pkgs; [ python311 ] ++
-            (with pkgs.python311Packages; [
-              pip
-              venvShellHook
-            ]);
-        };
-      });
-    };
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forEachSupportedSystem = f:
+      nixpkgs.lib.genAttrs supportedSystems (system:
+        f {
+          pkgs = import nixpkgs {inherit system;};
+        });
+  in {
+    devShells = forEachSupportedSystem ({pkgs}: {
+      default = pkgs.mkShell {
+        venvDir = "venv";
+        packages = with pkgs;
+          [python311]
+          ++ (with pkgs.python311Packages; [
+            pip
+            venvShellHook
+            python-lsp-server
+          ]);
+      };
+    });
+  };
 }