diff --git a/ocaml-rpm-macros.changes b/ocaml-rpm-macros.changes
index 2f1f01c..0742dc5 100644
--- a/ocaml-rpm-macros.changes
+++ b/ocaml-rpm-macros.changes
@@ -5,7 +5,8 @@ Thu Jan 21 21:21:21 UTC 2021 - ohering@suse.de
   Take negative predicates in requires() into account, and ignore them.
   This is supposed to avoid dependency cycles due to excessive
   list of dependencies.
-  
+- Run dune installed-libraries also in ocaml_dune_test
+
 -------------------------------------------------------------------
 Thu Jan 14 14:14:14 UTC 2021 - ohering@suse.de
 
diff --git a/ocaml-rpm-macros.spec b/ocaml-rpm-macros.spec
index f0389f7..1b53779 100644
--- a/ocaml-rpm-macros.spec
+++ b/ocaml-rpm-macros.spec
@@ -507,6 +507,11 @@ ocaml setup.ml -configure \\\
 		read dune_release_pkgs < dune_release_pkgs-%%{name}-%%{version}-%%{release} ; \
 		dune_for_release="--for-release-of-packages=${dune_release_pkgs}" ; \
 	fi ; \
+	dune installed-libraries $OCAML_DUNE_INSTALLED_LIBRARIES_ARGS ; \
+	dune external-lib-deps \\\
+		${dune_for_release} \\\
+		'@runtest' \\\
+		$OCAML_DUNE_EXTERNAL_LIB_DEPS_ARGS ; \
 	if dune runtest \\\
 		--verbose \\\
 		${dune_for_release} \\\