diff --git a/test/integration/dune b/test/integration/dune
index 1ff6af3..7bc36a0 100644
--- a/test/integration/dune
+++ b/test/integration/dune
@@ -3,8 +3,9 @@
 
 (executables
  (names      runtest)
- (preprocess (pps ppx_yojson_conv))
+ (preprocess (pps ppx_yojson_conv ppx_yojson_conv))
  (libraries  jupyter
-             unix)
+             unix
+             ppx_yojson_conv_lib)
  (flags      ((:include %{workspace_root}/config/ocaml_flags.sexp)
               (:include %{workspace_root}/config/ocaml_test_flags.sexp))))