diff --git a/kdiff3.spec b/kdiff3.spec
index f56480a..1d4fd46 100644
--- a/kdiff3.spec
+++ b/kdiff3.spec
@@ -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: