diff --git a/developers.html b/developers.html
index 0b4369e96e8542831644bcaf52602723d3e90ab2..6a87f63695a268ac54b0f7e18ddfb806e7621cba 100644
--- a/developers.html
+++ b/developers.html
@@ -2406,6 +2406,14 @@ netbeans_jdkhome="C:\Program Files\Java\jdk1.8.0_221"</pre>
           Developer notes:
       </p>
       <ul>
+          <li>
+              There is a
+              <a href="https://issues.apache.org/jira/plugins/servlet/mobile#issue/NETBEANS-5602">Netbeans 12.3 problem with Tomcat</a>
+              that should be fixed by
+              <a href="https://cwiki.apache.org/confluence/display/NETBEANS/Apache+NetBeans+12.4">Netbeans 12.4</a>,
+              appearing in late May according to the
+              <a href="https://cwiki.apache.org/confluence/display/NETBEANS/Release+Schedule">Release Schedule</a>.
+          </li>
           <li>
               Local installation as regular user (rather than local administrator) can simplify Tomcat configuration and access.
           </li>
@@ -3016,7 +3024,7 @@ which can lead to the Internet of Things becoming the Web of Things. </i>
             <a href="https://savage.nps.edu/developers.html">https://savage.nps.edu/developers.html</a>
         </blockquote>
         <blockquote>
-            Revised 13 May 2021.
+            Revised 14 May 2021.
         </blockquote>
 
         <p>