diff --git a/srcpkgs/byacc/template b/srcpkgs/byacc/template
index 3f45094f386..1dcf5c81814 100644
--- a/srcpkgs/byacc/template
+++ b/srcpkgs/byacc/template
@@ -1,6 +1,6 @@
 # Template file for 'byacc'
 pkgname=byacc
-version=20210328
+version=20210520
 revision=1
 build_style=gnu-configure
 configure_args="--program-transform=s,^,b,"
@@ -9,7 +9,7 @@ maintainer="Leah Neukirchen <leah@vuxu.org>"
 license="Public Domain"
 homepage="http://invisible-island.net/byacc/"
 distfiles="ftp://ftp.invisible-island.net/${pkgname}/${pkgname}-${version}.tgz"
-checksum=8b8f258eb22a4eae994ee374a712dd08e023cde1c39b373e8db8ba7806c50585
+checksum=d7d31dae72cb973482ef7f975609ae401ccc12ee3fb168b67a69526c60afe43e
 
 alternatives="
  yacc:yacc:/usr/bin/byacc