diff --git a/pl/java/jvm/internals/memory.txt b/pl/java/jvm/internals/memory.txt
index cb8f48872..9bfc1210f 100644
--- a/pl/java/jvm/internals/memory.txt
+++ b/pl/java/jvm/internals/memory.txt
@@ -1,4 +1,6 @@
 2023
+ Troubleshooting Native Memory Issues in Java Applications 0:00 of 34:28
+    https://www.youtube.com/watch?v=NI16bqeGv7U
 https://serce.me/posts/01-02-2023-jvm-field-guide-memory
 2019
 JUG.RU - Pangin - Java Process Memory by Shelves 0:00 of 59:19
diff --git a/pl/java/tools/quality/profiling/jfr/docs/presentations.txt b/pl/java/tools/quality/profiling/jfr/docs/presentations.txt
index 0025421ce..cd9417a7d 100644
--- a/pl/java/tools/quality/profiling/jfr/docs/presentations.txt
+++ b/pl/java/tools/quality/profiling/jfr/docs/presentations.txt
@@ -68,10 +68,11 @@ Java - Joakim Nordstrom - Programmer's Guide to JDK Flight Recorder of 36:55
         jfr 23544 JFR.start +backend.io.BytesRead#enabled=true
 
 2023
-Java - Continuous Monitoring with JDK Flight Recorder 10:00 of 45:55
+Java - Continuous Monitoring with JDK Flight Recorder 18:00 of 45:55
     https://www.youtube.com/watch?v=Gx_JGVborJ0
     ! import jdk.jfr.Event;
     ! extend ...
+    ! @StackTrace(... depth ...)
 2022
 Java - Programmer's Guide to JDK Flight Recorder of 24:08
     https://www.youtube.com/watch?v=K1ApBZGiT-Y