diff --git a/flake.nix b/flake.nix
index a11d779..1138f46 100644
--- a/flake.nix
+++ b/flake.nix
@@ -27,7 +27,7 @@
     };
 
     devShells.${system}.default = pkgs.mkShell {
-      buildInputs = with pkgs; [niv ruff-lsp];
+      buildInputs = with pkgs; [niv pkgs.python3.pkgs.semver ruff-lsp];
     };
 
     packages.${system} = let
@@ -38,14 +38,17 @@
           packageSets.nixpkgs = pkgs;
           modules = [
             {
-              config.deps.src = src;
-              config.deps.version = version;
+              config.deps = {
+                inherit src version;
+              };
             }
             ./default.nix
             {
-              paths.projectRoot = ./.;
-              paths.projectRootFile = "flake.nix";
-              paths.package = ./.;
+              paths = {
+                projectRoot = ./.;
+                projectRootFile = "flake.nix";
+                package = ./.;
+              };
             }
           ];
         };
diff --git a/scripts/update-sources/default.nix b/scripts/update-sources/default.nix
index 825f589..dbbd100 100644
--- a/scripts/update-sources/default.nix
+++ b/scripts/update-sources/default.nix
@@ -9,7 +9,7 @@ writeShellApplication {
   runtimeInputs = [
     gh
     niv
-    (python3.withPackages (ps: with ps; [semver]))
+    (python3.withPackages (pkgs: with pkgs; [semver]))
   ];
   text = ''
     gh api repos/microsoft/vscode-js-debug/releases --jq '.[].tag_name' | python ${./update-sources.py}