diff --git a/nix/modules/workspace.nix b/nix/modules/workspace.nix
index 31884324..51a0e6c8 100644
--- a/nix/modules/workspace.nix
+++ b/nix/modules/workspace.nix
@@ -7,7 +7,7 @@ let
     then pkgs.openssl # pkgsStatic is considered a cross build and this is not yet supported
     else pkgs.pkgsStatic.openssl;
 
-  nonCargoBuildFiles = path: _type: builtins.match ".*(conductor-config.yaml|conductor-config-ci.yaml)$" path != null;
+  nonCargoBuildFiles = path: _type: builtins.match ".*(conductor-config.yaml|conductor-config-ci.yaml|summariser/test_data/.*.json)$" path != null;
   includeFilesFilter = path: type:
     (craneLib.filterCargoSources path type) || (nonCargoBuildFiles path type);