diff --git a/srcpkgs/python3-aniso8601/template b/srcpkgs/python3-aniso8601/template
index 07ebc1edfee..55f071d4e92 100644
--- a/srcpkgs/python3-aniso8601/template
+++ b/srcpkgs/python3-aniso8601/template
@@ -1,9 +1,9 @@
 # Template file for 'python3-aniso8601'
 pkgname=python3-aniso8601
-version=3.0.2
+version=4.0.1
 revision=1
 noarch=yes
-_gitver=d21525fd4579
+_gitver=455a4a8e7e1b
 wrksrc="nielsenb-aniso8601-${_gitver}"
 build_style=python3-module
 pycompile_module="aniso8601"
@@ -14,7 +14,7 @@ maintainer="Andrew Benson <abenson+void@gmail.com>"
 license="MIT"
 homepage="https://bitbucket.org/nielsenb/aniso8601"
 distfiles="${homepage}/get/v${version}.tar.gz"
-checksum=8104cd739e07dc62e165cd4804c3825b12e524e9019c97a28f57679e53b4085f
+checksum=7a01116e9e931c7c29f2dfdd66ce081db3369d15538e708e18fce30159530852
 
 post_install() {
 	vlicense LICENSE
diff --git a/srcpkgs/python3-aniso8601/update b/srcpkgs/python3-aniso8601/update
new file mode 100644
index 00000000000..2d5e4285200
--- /dev/null
+++ b/srcpkgs/python3-aniso8601/update
@@ -0,0 +1,2 @@
+site='https://bitbucket.org/nielsenb/aniso8601/downloads/?tab=tags'
+pkgname=v