diff --git a/shell.nix b/shell.nix
index bd0e4bf..cf33fed 100644
--- a/shell.nix
+++ b/shell.nix
@@ -58,6 +58,7 @@ let
     LOCALE_ARCHIVE_2_21 = "${oldpkgs.glibcLocales}/lib/locale/locale-archive";
     LOCALE_ARCHIVE_2_27 = "${pkgs.glibcLocales}/lib/locale/locale-archive";
     RUST_BACKTRACE = "1";
+    RUST_LOG = "ofborg=debug";
     passthru.phpEnv = phpEnv;
   };