diff -Nru astroidmail-0.17+ds/debian/changelog astroidmail-0.17+ds/debian/changelog
--- astroidmail-0.17+ds/debian/changelog	2026-02-22 13:02:01.000000000 +0100
+++ astroidmail-0.17+ds/debian/changelog	2026-10-08 14:54:29.000000000 +0200
@@ -1,3 +1,11 @@
+astroidmail (0.17+ds-3.1) UNRELEASED; urgency=medium
+
+  * debian/control: drop the libboost-system-dev build-depends,
+    Boost.System is header-only and the binary isn't provided by boost
+    1.90 anymore, the build doesn't use it
+
+ -- Sebastien Bacher <seb128@ubuntu.com>  Thu, 08 Oct 2026 14:54:29 +0200
+
 astroidmail (0.17+ds-3) unstable; urgency=medium
 
   * autopkgtest-depend on xvfb;
diff -Nru astroidmail-0.17+ds/debian/control astroidmail-0.17+ds/debian/control
--- astroidmail-0.17+ds/debian/control	2026-02-22 13:01:47.000000000 +0100
+++ astroidmail-0.17+ds/debian/control	2026-10-08 14:54:29.000000000 +0200
@@ -10,7 +10,6 @@
  libboost-filesystem-dev,
  libboost-log-dev,
  libboost-program-options-dev,
- libboost-system-dev,
  libboost-test-dev,
  libboost-thread-dev,
  libglibmm-2.4-dev,