diff --git a/Readme.md b/Readme.md
index 752b658..b71f4d7 100644
--- a/Readme.md
+++ b/Readme.md
@@ -13,7 +13,7 @@ Gives you access to `rsync`, `ssh`, and `scp` commands.
 
 ### rust
 
-Rust stable toolchain, with `rustup`, `fmt`, `clippy`, `llvm-tools`, and `audit`.
+Rust stable toolchain, with `rustup`, `fmt`, `clippy`, `llvm-cov`, `llvm-tools`, and `audit`.
 
 ---
 
diff --git a/rust/Dockerfile b/rust/Dockerfile
index ad574ed..a4a34d1 100644
--- a/rust/Dockerfile
+++ b/rust/Dockerfile
@@ -2,11 +2,16 @@ FROM alpine:latest
 
 LABEL org.opencontainers.image.authors="kaan@bgenc.net"
 
+# Install rustup and other base packages we need to build stuff.
+# Installing rustup with rustup-init also brings in fmt and clippy.
 RUN apk add --no-cache rustup build-base pkgconfig openssl-dev \
   && rustup-init -y
 
 ENV PATH=/root/.cargo/bin:$PATH
 
-RUN rustup component add llvm-tools-preview
+# Install cargo llvm-cov and llvm-tools
+RUN rustup component add llvm-tools \
+  && cargo install cargo-llvm-cov
 
+# Install cargo-audit
 RUN cargo install cargo-audit