diff --git a/kdiff3-1.11.5.tar.xz b/kdiff3-1.11.5.tar.xz
deleted file mode 100644
index fb57364..0000000
--- a/kdiff3-1.11.5.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:420f18b3b9689698a05e102f8a41719049074da68f96c94be18d1b8297eeb545
-size 1142840
diff --git a/kdiff3-1.11.5.tar.xz.sig b/kdiff3-1.11.5.tar.xz.sig
deleted file mode 100644
index 638c8aa..0000000
--- a/kdiff3-1.11.5.tar.xz.sig
+++ /dev/null
@@ -1,16 +0,0 @@
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diff --git a/kdiff3-1.12.0.tar.xz b/kdiff3-1.12.0.tar.xz
new file mode 100644
index 0000000..da98f1d
--- /dev/null
+++ b/kdiff3-1.12.0.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f93a065df8b2d70f22eb473c2dbfaad975c70341f37a918eb6ebb452771bacd6
+size 1204256
diff --git a/kdiff3-1.12.0.tar.xz.sig b/kdiff3-1.12.0.tar.xz.sig
new file mode 100644
index 0000000..094ab78
--- /dev/null
+++ b/kdiff3-1.12.0.tar.xz.sig
@@ -0,0 +1,16 @@
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diff --git a/kdiff3.changes b/kdiff3.changes
index 2de544a..24764bf 100644
--- a/kdiff3.changes
+++ b/kdiff3.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Sun Dec  8 11:05:37 UTC 2024 - Christophe Marin <christophe@krop.fr>
+
+- Update to 1.12.0
+  * Completed port away from Qt5, 6.6 now required version due
+    to delayed ICU support in Qt
+  * Fixed UTF-8-BOM output encoding issues mustly seen on windows.
+  * horizontal scroll correctly comptuted for diff windows
+  * False errors on first launch with files selected should be fixed.
+    (kde#497102, boo#1234260)
+
 -------------------------------------------------------------------
 Wed Nov 20 12:44:08 UTC 2024 - Christophe Marin <christophe@krop.fr>
 
diff --git a/kdiff3.spec b/kdiff3.spec
index 7e9b6a6..450f42f 100644
--- a/kdiff3.spec
+++ b/kdiff3.spec
@@ -21,7 +21,7 @@
 
 %bcond_without released
 Name:           kdiff3
-Version:        1.11.5
+Version:        1.12.0
 Release:        0
 Summary:        Code Comparison Utility
 License:        GPL-2.0-or-later
@@ -31,9 +31,11 @@ Source0:        https://download.kde.org/stable/%{name}/%{name}-%{version}.tar.x
 Source1:        https://download.kde.org/stable/%{name}/%{name}-%{version}.tar.xz.sig
 Source2:        kdiff3.keyring
 %endif
-BuildRequires:  boost-devel >= 1.71
+BuildRequires:  cmake >= 3.22
+BuildRequires:  boost-devel >= 1.82
 BuildRequires:  kf6-extra-cmake-modules >= %{kf6_version}
 BuildRequires:  fdupes
+BuildRequires:  pkgconfig
 BuildRequires:  cmake(KF6Config) >= %{kf6_version}
 BuildRequires:  cmake(KF6CoreAddons) >= %{kf6_version}
 BuildRequires:  cmake(KF6Crash) >= %{kf6_version}
@@ -48,6 +50,8 @@ BuildRequires:  cmake(Qt6Gui) >= %{qt6_version}
 BuildRequires:  cmake(Qt6PrintSupport) >= %{qt6_version}
 BuildRequires:  cmake(Qt6Test) >= %{qt6_version}
 BuildRequires:  cmake(Qt6Widgets) >= %{qt6_version}
+BuildRequires:  pkgconfig(icu-i18n) >= 70.0
+BuildRequires:  pkgconfig(icu-uc) >= 70.0
 
 %description
 KDiff3 is a program that:
@@ -64,7 +68,7 @@ KDiff3 is a program that:
 %autosetup -p1
 
 %build
-%cmake_kf6 -DBUILD_WITH_QT6:BOOL=TRUE
+%cmake_kf6
 
 %kf6_build