--- a/.docker/Dockerfile-try-runtime
+++ b/.docker/Dockerfile-try-runtime
@@ -7,6 +7,8 @@
 ENV RUST_TOOLCHAIN $RUST_TOOLCHAIN
 ENV CARGO_HOME="/cargo-home"
 ENV PATH="/cargo-home/bin:$PATH"
+ENV TZ=UTC
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 
 RUN apt-get update && \