diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9041fdb7..1c38861a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
+### Fixed
+- [#2643] APNG export - images containing multiple IDAT chunks
 
 ## [25.1.2] - 2026-02-23
 ### Added
@@ -4161,6 +4163,7 @@ Major version of SWF to XML export changed to 2.
 [alpha 9]: https://github.com/jindrapetrik/jpexs-decompiler/compare/alpha8...alpha9
 [alpha 8]: https://github.com/jindrapetrik/jpexs-decompiler/compare/alpha7...alpha8
 [alpha 7]: https://github.com/jindrapetrik/jpexs-decompiler/releases/tag/alpha7
+[#2643]: https://www.free-decompiler.com/flash/issues/2643
 [#2639]: https://www.free-decompiler.com/flash/issues/2639
 [#2642]: https://www.free-decompiler.com/flash/issues/2642
 [#2636]: https://www.free-decompiler.com/flash/issues/2636
diff --git a/lib/jpexs-apng.jar b/lib/jpexs-apng.jar
index 603c78099..7d861dac5 100644
Binary files a/lib/jpexs-apng.jar and b/lib/jpexs-apng.jar differ
diff --git a/libsrc/ffdec_lib/lib/jpexs-apng.jar b/libsrc/ffdec_lib/lib/jpexs-apng.jar
index 603c78099..7d861dac5 100644
Binary files a/libsrc/ffdec_lib/lib/jpexs-apng.jar and b/libsrc/ffdec_lib/lib/jpexs-apng.jar differ