diff --git a/multimedia/misc/libebml/pspec.xml b/multimedia/misc/libebml/pspec.xml
index d6dc5aec9e..3923e95e58 100644
--- a/multimedia/misc/libebml/pspec.xml
+++ b/multimedia/misc/libebml/pspec.xml
@@ -13,6 +13,9 @@
         <Summary>Extensible binary format library (kinda like XML)</Summary>
         <Description>Extensible Binary Meta Language access library A library for reading and writing files with the Extensible Binary Meta Language, a binary pendant to XML.</Description>
         <Archive sha1sum="abdcaac0f10756271ad6a15a2147e9bc51cd8661" type="tarxz">https://dl.matroska.org/downloads/libebml/libebml-1.3.9.tar.xz</Archive>
+        <BuildDependencies>
+            <Dependency>cmake</Dependency>
+        </BuildDependencies>
     </Source>
 
     <Package>