diff --git a/dev-ml/merlin/merlin-4.13-r2.ebuild b/dev-ml/merlin/merlin-4.13-r2.ebuild
index d2d79ed2fc210..a46713572004f 100644
--- a/dev-ml/merlin/merlin-4.13-r2.ebuild
+++ b/dev-ml/merlin/merlin-4.13-r2.ebuild
@@ -14,7 +14,10 @@ LICENSE="MIT"
 SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="emacs +ocamlopt test"
-RESTRICT="!test? ( test )"
+
+# Tests fail unexpectedly on Tinderbox. See https://bugs.gentoo.org/933857
+# RESTRICT="!test? ( test )"
+RESTRICT="test"
 
 RDEPEND="
 	<dev-lang/ocaml-5