diff --git a/prosody/Dockerfile b/prosody/Dockerfile
index 6ca7675..dfbd216 100644
--- a/prosody/Dockerfile
+++ b/prosody/Dockerfile
@@ -8,8 +8,8 @@ RUN \
     && rm -f /tmp/prosody.key \
     && echo "deb http://packages.prosody.im/debian stretch main" > /etc/apt/sources.list.d/prosody.list \
     && apt-dpkg-wrap apt-get update \
+    && apt-dpkg-wrap apt-get install -y prosody \
     && apt-dpkg-wrap apt-get install -t stretch-backports -y \
-      prosody \
       liblua5.2-dev \
       sasl2-bin \
       libsasl2-modules-ldap \