diff --git a/srcpkgs/android-tools/template b/srcpkgs/android-tools/template
index 4f67610c2d5..5e72aa7d245 100644
--- a/srcpkgs/android-tools/template
+++ b/srcpkgs/android-tools/template
@@ -1,6 +1,9 @@
 # Template file for 'android-tools'
 pkgname=android-tools
 _version=5.1.0_r3
+# NOTE: not all upstream updates has code changes for the parts
+#       of android used by android-tools. Check for diff with:
+#         curl -L http://git.io/vvC0Z | sh -s 5.0.2_r1 5.1.0_r1
 version=${_version/_/}
 revision=1
 create_wrksrc=yes