diff --git a/pica-mail-mta/Dockerfile b/pica-mail-mta/Dockerfile
index 05fa8955bc6a9abb335701d4b51a16e03ca918eb..68d6d2ba12980fabf3d30bb0c27b718b83756a19 100644
--- a/pica-mail-mta/Dockerfile
+++ b/pica-mail-mta/Dockerfile
@@ -8,7 +8,7 @@ ENV DEBIAN_FRONTEND noninteractive
 #installation des paquets debian
 RUN apt-get update -y \
   && apt-get install -y \
-      postfix postfix-ldap libsasl2-modules postfix sasl2-bin opendkim-tools \
+      postfix postfix-ldap libsasl2-modules postfix sasl2-bin opendkim opendkim-tools \
   && rm -rf /var/lib/apt/lists/*