diff --git a/RELEASE_NOTES.html b/RELEASE_NOTES.html
index de9e42f81..56a2223b0 100644
--- a/RELEASE_NOTES.html
+++ b/RELEASE_NOTES.html
@@ -9,6 +9,9 @@
 <body lang="en">
 <h1>EPICS Release 3.13.10</h1>
 <h2>Changes since 3.13.9</h2>
+<h3>seq_ca</h3>
+<p>The sequencer did not properly keep track of number of channels connected.
+It now checks if it is actually connected/disconnect before it increments/decrements the counts.</p>
 <h3>devXxDg535Gpib</h3>
 <p>The DG535 GPIB support has been removed from base. It is in the APS/ASD
 share and has also been converted to 3.14</p>
