diff --git a/moltemplate/scripts/moltemplate.sh b/moltemplate/scripts/moltemplate.sh
index 999ae4e..c1426f9 100755
--- a/moltemplate/scripts/moltemplate.sh
+++ b/moltemplate/scripts/moltemplate.sh
@@ -6,8 +6,8 @@
 # Copyright (c) 2013
 
 G_PROGRAM_NAME="moltemplate.sh"
-G_VERSION="2.20.23"
-G_DATE="2024-12-01"
+G_VERSION="2.21.1"
+G_DATE="2024-12-03"
 
 echo "${G_PROGRAM_NAME} v${G_VERSION} ${G_DATE}" >&2
 echo "" >&2
diff --git a/setup.py b/setup.py
index 251fd0e..21f70de 100644
--- a/setup.py
+++ b/setup.py
@@ -45,9 +45,9 @@
 
   url='https://github.com/jewettaij/moltemplate',
 
-  download_url='https://github.com/jewettaij/moltemplate/archive/v2.20.23.zip',
+  download_url='https://github.com/jewettaij/moltemplate/archive/v2.21.1.zip',
 
-  version='2.20.23',
+  version='2.21.1',
 
   keywords=['simulation', 'LAMMPS', 'molecule editor', 'molecule builder',
             'ESPResSo'],