diff -Nru amd64-microcode-3.20191218.1ubuntu1/debian/changelog amd64-microcode-3.20191218.1ubuntu2/debian/changelog
--- amd64-microcode-3.20191218.1ubuntu1/debian/changelog	2020-02-16 07:43:50.000000000 +0000
+++ amd64-microcode-3.20191218.1ubuntu2/debian/changelog	2021-10-07 10:09:20.000000000 +0000
@@ -1,3 +1,9 @@
+amd64-microcode (3.20191218.1ubuntu2) impish; urgency=medium
+
+  * No-change rebuild to build packages with zstd compression.
+
+ -- Matthias Klose <doko@ubuntu.com>  Thu, 07 Oct 2021 12:09:20 +0200
+
 amd64-microcode (3.20191218.1ubuntu1) focal; urgency=low
 
   * Merge from Debian unstable.  Remaining changes: