diff --git a/debian/changelog b/debian/changelog
index bc4694ae40117f66b4b78c073c91dadbf5bd10f0..aa32bd006a0818947dfc6d7f8358e68621db8ede 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
 cl-asdf (2:3.1.5-1) unstable; urgency=low
 
   Bug fix and portability release:
+  * Add immutable-system support (thanks to Dave Cooper).
   * Add CLASP support.
   * Many miscellaneous fixes for issues on individual implementations,
     notably UIOP incompatibility introduced by SBCL 1.2.12, support for
@@ -8,6 +9,8 @@ cl-asdf (2:3.1.5-1) unstable; urgency=low
     to run-program on Windows.
   * Added OS-COND to UIOP to paper over some incompatibilities about when
     and how operating system can be detected on different implementations.
+    Made OS predicates run test at runtime so you can bind *features* from
+    a target system and determine its OS.
   * Fixes to XDG configuration directory handling.  Try to stick to the
     XDG spec, rather than guessing what it should be on different platforms.
     To recognize this, change UIOP functions about XDG files to "XDG-"