diff --git a/editor/liblangtag/pspec.xml b/editor/liblangtag/pspec.xml
index 2043f23622..25960a76ee 100644
--- a/editor/liblangtag/pspec.xml
+++ b/editor/liblangtag/pspec.xml
@@ -15,6 +15,7 @@
         <Description>liblangtag is an interface library to access/deal with tags for identifying languages, which is described in RFC.</Description>
         <Archive sha1sum="47041c94500c04c657b83cc2ff1a4343efc44b04" type="tarbz2">https://bitbucket.org/tagoh/liblangtag/downloads/liblangtag-0.6.3.tar.bz2</Archive>
         <BuildDependencies>
+            <Dependency>python3</Dependency>
             <Dependency>libxml2-devel</Dependency>
             <Dependency>glib2-devel</Dependency>
             <Dependency>gobject-introspection-devel</Dependency>