diff -pruN 6.9.2+dfsg-3/debian/changelog 6.9.2+dfsg-3ubuntu1/debian/changelog
--- 6.9.2+dfsg-3/debian/changelog	2025-10-25 12:34:36.000000000 +0000
+++ 6.9.2+dfsg-3ubuntu1/debian/changelog	2025-10-27 13:06:57.000000000 +0000
@@ -1,3 +1,10 @@
+qt6-base (6.9.2+dfsg-3ubuntu1) resolute; urgency=medium
+
+  * Add ccache to qt6-base-dev depends on riscv64 for now to avoid qt6-*
+    packages FTBFS.
+
+ -- Rik Mills <rikmills@kde.org>  Mon, 27 Oct 2025 13:06:57 +0000
+
 qt6-base (6.9.2+dfsg-3) unstable; urgency=medium
 
   [ Patrick Franz ]
diff -pruN 6.9.2+dfsg-3/debian/control 6.9.2+dfsg-3ubuntu1/debian/control
--- 6.9.2+dfsg-3/debian/control	2025-10-25 12:01:50.000000000 +0000
+++ 6.9.2+dfsg-3ubuntu1/debian/control	2025-10-27 13:06:57.000000000 +0000
@@ -1,6 +1,7 @@
 Source: qt6-base
 Priority: optional
-Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>
 Uploaders: Patrick Franz <deltaone@debian.org>,
 Build-Depends: debhelper-compat (= 13),
                dh-exec,
@@ -385,7 +386,8 @@ Package: qt6-base-dev
 Section: libdevel
 Architecture: any
 Multi-Arch: same
-Depends: libgl-dev,
+Depends: ccache [riscv64],
+         libgl-dev,
          libglx-dev,
          libopengl-dev,
          libqt6concurrent6 (= ${binary:Version}),