diff --git a/scripts/assemble_changelog.py b/scripts/assemble_changelog.py
old mode 100644
new mode 100755
index afff200..81ce682
--- a/scripts/assemble_changelog.py
+++ b/scripts/assemble_changelog.py
@@ -115,7 +115,7 @@
 class TextChangelogFormat(ChangelogFormat):
     """The traditional Mbed TLS changelog format."""
 
-    _unreleased_version_text = '= Mbed TLS x.x.x branch released xxxx-xx-xx'
+    _unreleased_version_text = '= {} x.x.x branch released xxxx-xx-xx'
     @classmethod
     def is_released_version(cls, title):
         # Look for an incomplete release date
@@ -123,6 +123,7 @@
 
     _top_version_re = re.compile(r'(?:\A|\n)(=[^\n]*\n+)(.*?\n)(?:=|$)',
                                  re.DOTALL)
+    _name_re = re.compile(r'=\s(.*)\s[0-9x]+\.', re.DOTALL)
     @classmethod
     def extract_top_version(cls, changelog_file_content):
         """A version section starts with a line starting with '='."""
@@ -132,15 +133,17 @@
             top_version_end = m.end(2)
             top_version_title = m.group(1)
             top_version_body = m.group(2)
+            name = re.match(cls._name_re, top_version_title).group(1)
         # No entries found
         else:
             top_version_start = None
             top_version_end = None
+            name = 'xxx'
             top_version_title = ''
             top_version_body = ''
         if cls.is_released_version(top_version_title):
             top_version_end = top_version_start
-            top_version_title = cls._unreleased_version_text + '\n\n'
+            top_version_title = cls._unreleased_version_text.format(name) + '\n\n'
             top_version_body = ''
         return (changelog_file_content[:top_version_start],
                 top_version_title, top_version_body,