diff --git a/desktop/xfce/addon/ristretto/pspec.xml b/desktop/xfce/addon/ristretto/pspec.xml
index 9d64f6f78d..126b2e2947 100644
--- a/desktop/xfce/addon/ristretto/pspec.xml
+++ b/desktop/xfce/addon/ristretto/pspec.xml
@@ -19,6 +19,7 @@
         <BuildDependencies>
             <Dependency>meson</Dependency>
             <Dependency>intltool</Dependency>
+            <Dependency>exo-devel</Dependency>
             <Dependency>gtk3-devel</Dependency>
             <Dependency>xfconf-devel</Dependency>
             <Dependency>libgsf-devel</Dependency>