diff --git a/rsyslog/Dockerfile b/rsyslog/Dockerfile
index c72f00a..47a31e3 100644
--- a/rsyslog/Dockerfile
+++ b/rsyslog/Dockerfile
@@ -19,6 +19,8 @@ RUN set -xe \
 VOLUME /var/log
 WORKDIR /var/log
 
+ENV TZ=UTC
+
 EXPOSE 514/tcp \
        514/udp
 
diff --git a/rsyslog/arm/Dockerfile b/rsyslog/arm/Dockerfile
index 0ac1868..0e0f459 100644
--- a/rsyslog/arm/Dockerfile
+++ b/rsyslog/arm/Dockerfile
@@ -19,6 +19,8 @@ RUN set -xe \
 VOLUME /var/log
 WORKDIR /var/log
 
+ENV TZ=UTC
+
 EXPOSE 514/tcp \
        514/udp