diff --git a/utils/credits_git_gen.py b/utils/credits_git_gen.py
index e8a2696..0b98863 100755
--- a/utils/credits_git_gen.py
+++ b/utils/credits_git_gen.py
@@ -150,14 +150,14 @@ class Credits:
         with open(filepath, 'w', encoding="ascii", errors='xmlcharrefreplace') as file:
             file.write("<h3>Individual Contributors</h3>\n\n")
             for author, cu in sorted_authors.items():
-                file.write("%s, %d %s %s<br />\n" %
-                           (author,
-                            cu.commit_total,
-                            commit_word[cu.commit_total > 1],
-                            ("" if not is_main_credits else (
-                             ("- %d" % cu.year_min) if cu.year_min == cu.year_max else
-                             ("(%d - %d)" % (cu.year_min, cu.year_max))))))
-            file.write("\n\n")
+                file.write("{:s}, {:,d} {:s} {:s}<br />\n".format(
+                    author,
+                    cu.commit_total,
+                    commit_word[cu.commit_total > 1],
+                    ("" if not is_main_credits else
+                     ("- {:d}".format(cu.year_min) if cu.year_min == cu.year_max else
+                      ("({:d} - {:d})".format(cu.year_min, cu.year_max))))))
+                file.write("\n\n")
 
             # -------------------------------------------------------------------------
             # Companies, hard coded
@@ -165,14 +165,16 @@ class Credits:
                 file.write("<h3>Contributions from Companies & Organizations</h3>\n")
                 file.write("<p>\n")
                 for line in contrib_companies:
-                    file.write("%s<br />\n" % line)
+                    file.write("{:s}<br />\n".format(line))
                 file.write("</p>\n")
 
                 import datetime
                 now = datetime.datetime.now()
                 fn = __file__.split("\\")[-1].split("/")[-1]
-                file.write("<p><center><i>Generated by '%s' %d/%d/%d</i></center></p>\n" %
-                           (fn, now.year, now.month, now.day))
+                file.write(
+                    "<p><center><i>Generated by '{:s}' {:d}/{:d}/{:d}</i></center></p>\n".format(
+                        fn, now.year, now.month, now.day
+                    ))
 
 
 def argparse_create():