diff --git a/util/misc/ibus/pspec.xml b/util/misc/ibus/pspec.xml
index 486fc8fc6c..a5bdc448e0 100644
--- a/util/misc/ibus/pspec.xml
+++ b/util/misc/ibus/pspec.xml
@@ -26,6 +26,7 @@
             <Dependency>intltool</Dependency>
             <Dependency>iso-codes</Dependency>
             <Dependency>libxslt</Dependency>
+            <Dependency>gtk-doc</Dependency>
             <Dependency>gobject-introspection-devel</Dependency>
             <Dependency>docbook-xsl</Dependency>
         </BuildDependencies>