[Dovecot] Dovecot 2.2.31, Pigeonhole 0.4.19

data/Dockerfiles/dovecot/Dockerfile

@@ -3,8 +3,8 @@ LABEL maintainer "Andre Peters <[email protected]>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 ENV LC_ALL C
-ENV DOVECOT_VERSION 2.2.30.2
-ENV PIGEONHOLE_VERSION 0.4.18
+ENV DOVECOT_VERSION 2.2.31
+ENV PIGEONHOLE_VERSION 0.4.19
 
 RUN apt-get update && apt-get -y install \
 	automake \