diff --git a/www-client/firefox/firefox-91.10.0.ebuild b/www-client/firefox/firefox-91.10.0.ebuild
index 4ba733d71e7c1..999cd444d776e 100644
--- a/www-client/firefox/firefox-91.10.0.ebuild
+++ b/www-client/firefox/firefox-91.10.0.ebuild
@@ -83,6 +83,7 @@ BDEPEND="${PYTHON_DEPS}
 	app-arch/unzip
 	app-arch/zip
 	>=dev-util/cbindgen-0.19.0
+	<dev-util/cbindgen-0.24.0
 	>=net-libs/nodejs-10.23.1
 	virtual/pkgconfig
 	>=virtual/rust-1.51.0