diff --git a/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal b/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
index 0896de2556..3501b22835 100644
--- a/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
+++ b/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
@@ -8,7 +8,10 @@ author:             rayshih
 maintainer:         mnf.shih@gmail.com
 category:           Development
 build-type:         Simple
-extra-source-files: LICENSE
+extra-source-files:
+  LICENSE
+  test/testdata/*.hs
+  test/testdata/*.yaml
 
 library
   exposed-modules:    Ide.Plugin.RefineImports