diff --git a/lucene/analysis/common/src/generated/checksums/generateTlds.json b/lucene/analysis/common/src/generated/checksums/generateTlds.json
index 654973d06e8d..a361e36e0d90 100644
--- a/lucene/analysis/common/src/generated/checksums/generateTlds.json
+++ b/lucene/analysis/common/src/generated/checksums/generateTlds.json
@@ -1,4 +1,4 @@
 {
-    "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex": "b0a75dc29e472c7e8667c4972e897b2f9527793d",
+    "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex": "b1af8dc8532d853fcf1acde1f6c629750b296b40",
     "lucene/analysis/common/src/test/org/apache/lucene/analysis/email/TLDs.txt": "b346a80f511b64a59d556eb3ef58cf396e98c631"
-}
\ No newline at end of file
+}
diff --git a/lucene/analysis/common/src/generated/checksums/generateUAX29URLEmailTokenizer.json b/lucene/analysis/common/src/generated/checksums/generateUAX29URLEmailTokenizer.json
index b96bc1b6aa9b..269355c38e17 100644
--- a/lucene/analysis/common/src/generated/checksums/generateUAX29URLEmailTokenizer.json
+++ b/lucene/analysis/common/src/generated/checksums/generateUAX29URLEmailTokenizer.json
@@ -1,6 +1,6 @@
 {
     "gradle/generation/jflex/skeleton.disable.buffer.expansion.txt": "68263ff0a014904c6e89b040d868d8f399408908",
-    "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex": "b0a75dc29e472c7e8667c4972e897b2f9527793d",
+    "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex": "b1af8dc8532d853fcf1acde1f6c629750b296b40",
     "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/UAX29URLEmailTokenizerImpl.java": "e437900d9570ca007f9c02c9ea286222b644c329",
     "lucene/analysis/common/src/java/org/apache/lucene/analysis/email/UAX29URLEmailTokenizerImpl.jflex": "56a751d27e481fb55388f91ebf34f5a0cb8cb1b2"
-}
\ No newline at end of file
+}
diff --git a/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex b/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex
index cd657adc1480..1d9b4b317883 100644
--- a/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex
+++ b/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex
@@ -16,8 +16,7 @@
  */
 // Generated from IANA Root Zone Database <https://www.internic.net/zones/root.zone>
 // file version from 2021 Apr 10, Sat 17:37:00 Coordinated Universal Time
-// generated on 2021 Apr 10, Sat 17:55:26 Coordinated Universal Time
-// by org.apache.lucene.analysis.standard.GenerateJflexTLDMacros
+// generated by org.apache.lucene.analysis.standard.GenerateJflexTLDMacros
 
 // LUCENE-8278: None of the TLDs in {ASCIITLD} is a 1-character-shorter prefix of another TLD
 ASCIITLD = "." (
diff --git a/lucene/analysis/common/src/tools/java/org/apache/lucene/analysis/standard/GenerateJflexTLDMacros.java b/lucene/analysis/common/src/tools/java/org/apache/lucene/analysis/standard/GenerateJflexTLDMacros.java
index 00a60b50f397..c8c230259223 100644
--- a/lucene/analysis/common/src/tools/java/org/apache/lucene/analysis/standard/GenerateJflexTLDMacros.java
+++ b/lucene/analysis/common/src/tools/java/org/apache/lucene/analysis/standard/GenerateJflexTLDMacros.java
@@ -30,7 +30,6 @@
 import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.Comparator;
-import java.util.Date;
 import java.util.List;
 import java.util.Locale;
 import java.util.SortedMap;
@@ -245,10 +244,7 @@ private void writeOutput() throws IOException {
         writer.write(dateFormat.format(tldFileLastModified));
         writer.write(NL);
       }
-      writer.write("// generated on ");
-      writer.write(dateFormat.format(new Date()));
-      writer.write(NL);
-      writer.write("// by ");
+      writer.write("// generated by ");
       writer.write(this.getClass().getName());
       writer.write(NL);
       writer.write(NL);