diff --git a/rust/signer/Makefile b/rust/signer/Makefile
index 146baf773c..c98e93664b 100644
--- a/rust/signer/Makefile
+++ b/rust/signer/Makefile
@@ -1,5 +1,5 @@
 NDK_STANDALONE = $(shell pwd)/../../NDK
-ARCHS_IOS = armv7-apple-ios armv7s-apple-ios aarch64-apple-ios
+ARCHS_IOS = i386-apple-ios x86_64-apple-ios armv7-apple-ios armv7s-apple-ios aarch64-apple-ios
 ARCHS_ANDROID = aarch64-linux-android armv7-linux-androideabi i686-linux-android
 LIB=libsigner.a