diff --git a/flake.nix b/flake.nix
index d39774e..f4b6ede 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,11 +26,11 @@
     in {
       default = pkgs.${system}.mkShellNoCC {
         packages = with pkgs.${system}; [
-          (mkPoetryEnv {
+          (mkPoetryEnv rec {
             projectDir = self;
             preferWheels = true;
             extras = ["*"];
-            editablePackageSources = {speedtest_logging = src;};
+            editablePackageSources = {speedtest_logging = projectDir;};
           })
           poetry
         ];