diff --git a/data/Dockerfiles/solr/Dockerfile b/data/Dockerfiles/solr/Dockerfile
index f1eed87e..67cd3384 100644
--- a/data/Dockerfiles/solr/Dockerfile
+++ b/data/Dockerfiles/solr/Dockerfile
@@ -2,7 +2,7 @@ FROM solr:7-alpine
 USER root
 COPY docker-entrypoint.sh /
 
-RUN apk --no-cache add su-exec curl \
+RUN apk --no-cache add su-exec curl tzdata \
   && chmod +x /docker-entrypoint.sh \
   && /docker-entrypoint.sh --bootstrap
 
diff --git a/data/Dockerfiles/unbound/Dockerfile b/data/Dockerfiles/unbound/Dockerfile
index 9fb46168..7658a8f8 100644
--- a/data/Dockerfiles/unbound/Dockerfile
+++ b/data/Dockerfiles/unbound/Dockerfile
@@ -8,6 +8,7 @@ RUN apk add --update --no-cache \
 	bash \
 	openssl \
 	drill \
+	tzdata \
 	&& curl -o /etc/unbound/root.hints https://www.internic.net/domain/named.cache \
 	&& chown root:unbound /etc/unbound \
   && adduser unbound tty \
diff --git a/docker-compose.yml b/docker-compose.yml
index a0a54ee8..3dec0fa7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -403,6 +403,7 @@ services:
       dns:
         - ${IPV4_NETWORK:-172.22.1}.254
       environment:
+        - TZ=${TZ}
         - SOLR_HEAP=${SOLR_HEAP:-1024}
         - SKIP_SOLR=${SKIP_SOLR:-y}
       networks: