diff --git a/alpine/APKBUILD.in b/alpine/APKBUILD.in
index 9a29ff3a96..fcb6cfae10 100644
--- a/alpine/APKBUILD.in
+++ b/alpine/APKBUILD.in
@@ -34,6 +34,8 @@ _localstatedir=/var/run/frr
 _user=frr
 
 build() {
+	export ABUILD_APK_INDEX_OPTS="--allow-untrusted"
+
 	cd "$builddir"
 
 	./configure \