diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b9213904..1fba17eb9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -62,6 +62,7 @@
 - Fix so css files in plugins/jqueryui/themes will be minified too (#8337)
 - Fix handling of unicode/special characters in custom From input (#8357)
 - Fix some PHP8 compatibility issues (#8363)
+- Fix chpass-wrapper.py helper compatibility with Python 3 (#8324)
 
 ## Release 1.5.1
 
diff --git a/plugins/password/helpers/chpass-wrapper.py b/plugins/password/helpers/chpass-wrapper.py
index e56811561..b3f81eb89 100644
--- a/plugins/password/helpers/chpass-wrapper.py
+++ b/plugins/password/helpers/chpass-wrapper.py
@@ -26,7 +26,7 @@ if username in BLACKLIST:
     sys.exit('Changing password for user %s is forbidden (user blacklisted)' %
              username)
 
-handle = subprocess.Popen('/usr/sbin/chpasswd', stdin = subprocess.PIPE)
+handle = subprocess.Popen('/usr/sbin/chpasswd', stdin = subprocess.PIPE, universal_newlines = True)
 handle.communicate('%s:%s' % (username, password))
 
 sys.exit(handle.returncode)