diff --git a/programming/build/ninja/pspec.xml b/programming/build/ninja/pspec.xml
index 663b57f90d..ac5b3fa8de 100644
--- a/programming/build/ninja/pspec.xml
+++ b/programming/build/ninja/pspec.xml
@@ -14,8 +14,9 @@
         <Description>Ninja is a small build system with a focus on speed.</Description>
         <Archive sha1sum="556ed5f8ee49753af1cf4b0ab2315d39d1954d58" type="targz">https://github.com/martine/ninja/archive/v1.7.1.tar.gz</Archive>
         <BuildDependencies>
-            <Dependency>asciidoc</Dependency>
             <Dependency>re2c</Dependency>
+            <Dependency>asciidoc</Dependency>
+            <Dependency>emacs-python</Dependency>
         </BuildDependencies>
         <Patches>
 <!--             <Patch>LFS.patch</Patch> -->