diff --git a/gammaray.spec b/gammaray.spec
index 87aa8bc..2eb9384 100644
--- a/gammaray.spec
+++ b/gammaray.spec
@@ -101,6 +101,7 @@ BuildRequires:  qt6-gui-private-devel >= %{qt_min_version}
 BuildRequires:  qt6-qml-private-devel >= %{qt_min_version}
 BuildRequires:  qt6-quick-private-devel >= %{qt_min_version}
 BuildRequires:  qt6-scxml-private-devel >= %{qt_min_version}
+BuildRequires:  qt6-statemachine-private-devel >= %{qt_min_version}
 BuildRequires:  qt6-widgets-private-devel >= %{qt_min_version}
 %if 0%{?suse_version} > 1500 || 0%{?sle_version} > 150500
 BuildRequires:  cmake(Qt6Location) >= %{qt_min_version}