diff --git a/desktop/kde/plasma/union/pspec.xml b/desktop/kde/plasma/union/pspec.xml
index d8ed55c9a0..a1d2c3bad6 100644
--- a/desktop/kde/plasma/union/pspec.xml
+++ b/desktop/kde/plasma/union/pspec.xml
@@ -23,6 +23,7 @@
             <Dependency>kcolorscheme-devel</Dependency>
             <Dependency>extra-cmake-modules</Dependency>
             <Dependency>qt6-declarative-devel</Dependency>
+            <Dependency>qt6-shadertools-devel</Dependency>
             <Dependency>cxx-rust-cssparser-devel</Dependency>
         </BuildDependencies>
         <!--