diff --git a/system/ansifilter/ansifilter.SlackBuild b/system/ansifilter/ansifilter.SlackBuild
index 2a5461d435..65b7c2e69b 100644
--- a/system/ansifilter/ansifilter.SlackBuild
+++ b/system/ansifilter/ansifilter.SlackBuild
@@ -6,10 +6,12 @@
 
 # Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
 
+# 20240909 bkw: update for v2.21.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=ansifilter
-VERSION=${VERSION:-2.20}
+VERSION=${VERSION:-2.21}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
diff --git a/system/ansifilter/ansifilter.info b/system/ansifilter/ansifilter.info
index 54475ed2a8..48f7f5c711 100644
--- a/system/ansifilter/ansifilter.info
+++ b/system/ansifilter/ansifilter.info
@@ -1,8 +1,8 @@
 PRGNAM="ansifilter"
-VERSION="2.20"
+VERSION="2.21"
 HOMEPAGE="http://andre-simon.de/doku/ansifilter/en/ansifilter.php"
-DOWNLOAD="http://andre-simon.de/zip/ansifilter-2.20.tar.bz2"
-MD5SUM="d2a8d8b9256bc8c843934d8123b5c0dd"
+DOWNLOAD="http://andre-simon.de/zip/ansifilter-2.21.tar.bz2"
+MD5SUM="a87c3b3a50c30c325a7cb0dd211c27a9"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""