diff --git a/desktop/kde/applications/calendarsupport/pspec.xml b/desktop/kde/applications/calendarsupport/pspec.xml
index 4336749895..55fe52b4e8 100755
--- a/desktop/kde/applications/calendarsupport/pspec.xml
+++ b/desktop/kde/applications/calendarsupport/pspec.xml
@@ -33,6 +33,7 @@
             <Dependency>extra-cmake-modules</Dependency>
             <Dependency>kcalendarcore-devel</Dependency>
             <Dependency>kunitconversion-devel</Dependency>
+            <Dependency>syntax-highlighting-devel</Dependency>
             <Dependency>kmime-devel</Dependency>
             <Dependency versionFrom="26.04.3">kimap-devel</Dependency>
             <Dependency versionFrom="26.04.3">akonadi-devel</Dependency>