diff --git a/qt6-qtvirtualkeyboard.spec b/qt6-qtvirtualkeyboard.spec
index 5040dd2..3e39b6c 100644
--- a/qt6-qtvirtualkeyboard.spec
+++ b/qt6-qtvirtualkeyboard.spec
@@ -13,6 +13,9 @@ Source0: https://download.qt.io/official_releases/qt/%{majmin}/%{version}/submod
 
 ## upstreamable patches
 
+BuildRequires: cmake
+BuildRequires: gcc-c++
+BuildRequires: ninja-build
 BuildRequires: qt6-qtbase-devel >= %{version}
 BuildRequires: qt6-qtbase-private-devel
 %{?_qt6:Requires: %{_qt6}%{?_isa} = %{_qt6_version}}