diff --git a/flake.nix b/flake.nix
index c9d16ca..cf50c1b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -185,6 +185,7 @@
           runtimeInputs = [ ];
           text = ''
             cd ${web-server}/lib/YongeStreet
+            export PREPROCESSED_DUCKDB_FILE="${processed-duckdb-file}"
             exec ${web-server}/bin/YongeStreet
           '';
         };