diff --git a/Lib/test/test_tools/i18n_data/ascii-escapes.pot b/Lib/test/test_tools/i18n_data/ascii-escapes.pot
index cc5a9f6ba619db..89ee65de23b211 100644
--- a/Lib/test/test_tools/i18n_data/ascii-escapes.pot
+++ b/Lib/test/test_tools/i18n_data/ascii-escapes.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #. Special characters that are always escaped in the POT file
diff --git a/Lib/test/test_tools/i18n_data/comments.pot b/Lib/test/test_tools/i18n_data/comments.pot
index a1df46d453c546..babb69e46b44c9 100644
--- a/Lib/test/test_tools/i18n_data/comments.pot
+++ b/Lib/test/test_tools/i18n_data/comments.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: comments.py:4
diff --git a/Lib/test/test_tools/i18n_data/custom_keywords.pot b/Lib/test/test_tools/i18n_data/custom_keywords.pot
index 03a9cba3a20b16..77c281f7264e6a 100644
--- a/Lib/test/test_tools/i18n_data/custom_keywords.pot
+++ b/Lib/test/test_tools/i18n_data/custom_keywords.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: custom_keywords.py:10 custom_keywords.py:11
diff --git a/Lib/test/test_tools/i18n_data/docstrings.pot b/Lib/test/test_tools/i18n_data/docstrings.pot
index 387db2413a575f..73f349e15ad7e5 100644
--- a/Lib/test/test_tools/i18n_data/docstrings.pot
+++ b/Lib/test/test_tools/i18n_data/docstrings.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: docstrings.py:1
diff --git a/Lib/test/test_tools/i18n_data/escapes.pot b/Lib/test/test_tools/i18n_data/escapes.pot
index 4dfac0f451ddcf..6db4c7f887df06 100644
--- a/Lib/test/test_tools/i18n_data/escapes.pot
+++ b/Lib/test/test_tools/i18n_data/escapes.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #. Special characters that are always escaped in the POT file
diff --git a/Lib/test/test_tools/i18n_data/fileloc.pot b/Lib/test/test_tools/i18n_data/fileloc.pot
index dbd28687a73556..31e679b5701afd 100644
--- a/Lib/test/test_tools/i18n_data/fileloc.pot
+++ b/Lib/test/test_tools/i18n_data/fileloc.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: fileloc.py:5 fileloc.py:6
diff --git a/Lib/test/test_tools/i18n_data/messages.pot b/Lib/test/test_tools/i18n_data/messages.pot
index e8167acfc0742b..e622cd0cc6df3e 100644
--- a/Lib/test/test_tools/i18n_data/messages.pot
+++ b/Lib/test/test_tools/i18n_data/messages.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: messages.py:16
diff --git a/Lib/test/test_tools/i18n_data/multiple_keywords.pot b/Lib/test/test_tools/i18n_data/multiple_keywords.pot
index 954cb8e994838a..5b995adcd7c238 100644
--- a/Lib/test/test_tools/i18n_data/multiple_keywords.pot
+++ b/Lib/test/test_tools/i18n_data/multiple_keywords.pot
@@ -12,7 +12,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: pygettext.py 1.5\n"
+"Generated-By: pygettext.py 3.15\n"
 
 
 #: multiple_keywords.py:3
diff --git a/Lib/test/test_tools/test_msgfmt.py b/Lib/test/test_tools/test_msgfmt.py
index 7be606bbff606a..974fc9a5facbfa 100644
--- a/Lib/test/test_tools/test_msgfmt.py
+++ b/Lib/test/test_tools/test_msgfmt.py
@@ -253,7 +253,7 @@ def test_version(self):
         for option in ('--version', '-V'):
             res = assert_python_ok(msgfmt_py, option)
             out = res.out.decode('utf-8').strip()
-            self.assertEqual('msgfmt.py 1.2', out)
+            self.assertRegex(out, r'^msgfmt\.py \d+\.\d+$')
 
     def test_invalid_option(self):
         res = assert_python_failure(msgfmt_py, '--invalid-option')
diff --git a/Misc/NEWS.d/next/Tools-Demos/2025-05-19-10-41-00.gh-issue-133319.asgss.rst b/Misc/NEWS.d/next/Tools-Demos/2025-05-19-10-41-00.gh-issue-133319.asgss.rst
new file mode 100644
index 00000000000000..f56efb2195d24f
--- /dev/null
+++ b/Misc/NEWS.d/next/Tools-Demos/2025-05-19-10-41-00.gh-issue-133319.asgss.rst
@@ -0,0 +1 @@
+Use Python versioning in :program:`msgfmt` and :program:`pygettext`.
diff --git a/Tools/i18n/msgfmt.py b/Tools/i18n/msgfmt.py
index cd5f1ed9f3e268..efa2101649f25e 100755
--- a/Tools/i18n/msgfmt.py
+++ b/Tools/i18n/msgfmt.py
@@ -34,7 +34,7 @@
 from email.parser import HeaderParser
 import codecs
 
-__version__ = "1.2"
+__version__ = "3.15"
 
 
 MESSAGES = {}
diff --git a/Tools/i18n/pygettext.py b/Tools/i18n/pygettext.py
index f46b05067d7fde..5a86456c9c6058 100755
--- a/Tools/i18n/pygettext.py
+++ b/Tools/i18n/pygettext.py
@@ -152,7 +152,8 @@
 from io import BytesIO
 from operator import itemgetter
 
-__version__ = '1.5'
+# Update this to the current python version when modifying this script.
+__version__ = '3.15'
 
 
 # The normal pot-file header. msgmerge and Emacs's po-mode work better if it's
@@ -387,7 +388,7 @@ def unparse_spec(name, spec):
             parts.append(f'{pos + 1}c')
         else:
             parts.append(str(pos + 1))
-    return f'{name}:{','.join(parts)}'
+    return f'{name}:{",".join(parts)}'
 
 
 def process_keywords(keywords, *, no_default_keywords):