diff --git a/desktop/kde/framework/kcalendarcore/pspec.xml b/desktop/kde/framework/kcalendarcore/pspec.xml
index c3650ab504..40a7347e11 100644
--- a/desktop/kde/framework/kcalendarcore/pspec.xml
+++ b/desktop/kde/framework/kcalendarcore/pspec.xml
@@ -14,6 +14,7 @@
         <Description>The KDE calendar access library</Description>
         <Archive sha1sum="2069ae065a5775f064c3ada1a6aac2e94c7bfaa9" type="tarxz">mirrors://kde/stable/frameworks/6.26/kcalendarcore-6.26.0.tar.xz</Archive>
         <BuildDependencies>
+            <Dependency>python3-build</Dependency>
             <Dependency>python3-devel</Dependency>
             <Dependency>pyside6-devel</Dependency>
             <Dependency>python3-shiboken6-devel</Dependency>