diff --git a/dune-project b/dune-project
index aa1a68e9b4..10e2f00c15 100644
--- a/dune-project
+++ b/dune-project
@@ -84,6 +84,8 @@
   dune
   (ocamlformat-lib
    (= :version))
+  (ocamlformat-rpc-lib
+   (and :with-test (= :version)))
   (re
    (>= 1.10.3))))
 
diff --git a/ocamlformat.opam b/ocamlformat.opam
index a83f002939..03a5cc11ce 100644
--- a/ocamlformat.opam
+++ b/ocamlformat.opam
@@ -12,6 +12,7 @@ depends: [
   "cmdliner" {>= "1.1.0"}
   "dune" {>= "2.8"}
   "ocamlformat-lib" {= version}
+  "ocamlformat-rpc-lib" {with-test & = version}
   "re" {>= "1.10.3"}
   "odoc" {with-doc}
 ]
diff --git a/test/unit/dune b/test/unit/dune
index d7f05e9566..37dcbd8603 100644
--- a/test/unit/dune
+++ b/test/unit/dune
@@ -1,4 +1,7 @@
 (test
  (name test_unit)
+ (deps
+  ../passing/tests/partial.ml
+  ../passing/tests/format_invalid_files_with_locations.ml)
  (package ocamlformat-lib)
  (libraries alcotest base ocamlformat-lib))
diff --git a/vendor/parser-recovery/lib/dune b/vendor/parser-recovery/lib/dune
index 503f299383..af614a6869 100644
--- a/vendor/parser-recovery/lib/dune
+++ b/vendor/parser-recovery/lib/dune
@@ -23,5 +23,6 @@
 
 (rule
  (alias runtest)
+ (package ocamlformat-lib)
  (action
   (diff recovery_parser.log recovery_parser.stderr)))