diff --git a/build-in-docker.conf b/build-in-docker.conf
index 96b7d5a..cfdbdf2 100644
--- a/build-in-docker.conf
+++ b/build-in-docker.conf
@@ -3,4 +3,5 @@ repos+=("Ubuntu-precise:::'deb http://archive.ubuntu.com/ubuntu precise universe
 repos+=("https://dev.marc.waeckerlin.org/repository")
 keys+=("https://dev.marc.waeckerlin.org/repository/PublicKey")
 envs+=("-e 'HOME=${HOME}'")
-dirs+=("-v ${HOME}/.gnupg:${HOME}/.gnupg:ro")
\ No newline at end of file
+dirs+=("-v ${HOME}/.gnupg:${HOME}/.gnupg:ro")
+packages+=("Debian-sid:::mrw-c\\+\\+")