diff --git a/ChangeLog b/ChangeLog
index c787ce9..a222b91 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2020-07-10  Keno Fischer  <keno@juliacomputing.com>
+
+	* config.sub (arm64-*): Canonicalise to aarch64-*.
+
 2020-06-28  John Ericson  <john.ericson@obsidian.systems>
 
 	* config.sub: Properly parse the KERNEL-OS case.
diff --git a/config.sub b/config.sub
index ce89d5c..0634942 100755
--- a/config.sub
+++ b/config.sub
@@ -1104,6 +1104,9 @@ case $cpu-$vendor in
 	xscale-* | xscalee[bl]-*)
 		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
 		;;
+	arm64-*)
+		cpu=aarch64
+		;;
 
 	# Recognize the canonical CPU Types that limit and/or modify the
 	# company names they are paired with.
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index d9639bc..197fffc 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -103,6 +103,8 @@ armv8a						armv8a-unknown-none
 armv8b-linux-gnueabi				armv8b-unknown-linux-gnueabi
 armv8m						armv8m-unknown-none
 armv8r						armv8r-unknown-none
+arm64-apple-darwin20.0.0			aarch64-apple-darwin20.0.0
+arm64-apple-ios					aarch64-apple-ios
 aros						i386-pc-aros
 asmjs						asmjs-unknown-none
 asmjs-emscripten				asmjs-unknown-emscripten