diff --git a/Releases.md b/Releases.md
index 3766395..b2a53bf 100644
--- a/Releases.md
+++ b/Releases.md
@@ -28,6 +28,11 @@ libisofs novelties:
   Proof-of-concept by Ivan Shmakov.
 * New API call iso_write_opts_set_max_ce_entries()
 
+Reason for .pl01:
+
+* Bug fix: On non-GNU/Linux systems ssize_t was not defined in rockridge.h .
+           Report and fix proposal by Rui Chen.
+
 -------------------------------------
 
 ### [libburn-1.5.6.tar.gz](http://files.libburnia-project.org/releases/libburn-1.5.6.tar.gz) Wed Jun 07 2023 [git tag](https://dev.lovelyhq.com/libburnia/libburn/src/tag/release-1.5.6) | [wiki](Libburn) | Signature: [libburn-1.5.6.tar.gz.sig](http://files.libburnia-project.org/releases/libburn-1.5.6.tar.gz.sig)