diff --git a/cmd/gomobile/build.go b/cmd/gomobile/build.go
index 5718a43..9584ea5 100644
--- a/cmd/gomobile/build.go
+++ b/cmd/gomobile/build.go
@@ -39,8 +39,8 @@ default) or ios.
 For -target android, if an AndroidManifest.xml is defined in the
 package directory, it is added to the APK output. Otherwise, a default
 manifest is generated. By default, this builds a fat APK for all supported
-instruction sets (arm, 386, amd64). A subset of instruction sets can be
-selected by specifying target type with the architecture name. E.g.
+instruction sets (arm, 386, amd64, arm64). A subset of instruction sets can
+be selected by specifying target type with the architecture name. E.g.
 -target=android/arm,android/386.
 
 For -target ios, gomobile must be run on an OS X machine with Xcode
diff --git a/cmd/gomobile/doc.go b/cmd/gomobile/doc.go
index 8d0a866..70a7121 100644
--- a/cmd/gomobile/doc.go
+++ b/cmd/gomobile/doc.go
@@ -83,8 +83,8 @@ default) or ios.
 For -target android, if an AndroidManifest.xml is defined in the
 package directory, it is added to the APK output. Otherwise, a default
 manifest is generated. By default, this builds a fat APK for all supported
-instruction sets (arm, 386, amd64). A subset of instruction sets can be
-selected by specifying target type with the architecture name. E.g.
+instruction sets (arm, 386, amd64, arm64). A subset of instruction sets can
+be selected by specifying target type with the architecture name. E.g.
 -target=android/arm,android/386.
 
 For -target ios, gomobile must be run on an OS X machine with Xcode