diff --git a/dev-libs/gmp/gmp-6.3.0-r1.ebuild b/dev-libs/gmp/gmp-6.3.0-r1.ebuild
index 100d8bba9d8b8..4de48f340c64c 100644
--- a/dev-libs/gmp/gmp-6.3.0-r1.ebuild
+++ b/dev-libs/gmp/gmp-6.3.0-r1.ebuild
@@ -56,6 +56,12 @@ pkg_pretend() {
 	fi
 }
 
+src_unpack() {
+	use verify-sig && verify-sig_verify_detached "${DISTDIR}"/${MY_P}.tar.xz{,.sig}
+
+	default
+}
+
 src_prepare() {
 	default