diff --git a/ci/docker-rust-nightly/Dockerfile b/ci/docker-rust-nightly/Dockerfile
index aca78f43e..70f80893a 100644
--- a/ci/docker-rust-nightly/Dockerfile
+++ b/ci/docker-rust-nightly/Dockerfile
@@ -4,9 +4,8 @@ ARG date
 RUN set -x \
  && rustup install nightly-$date \
  && rustup show \
- && rustup show \
  && rustc --version \
  && cargo --version \
+ && cargo install grcov \
  && rustc +nightly-$date --version \
  && cargo +nightly-$date --version
-