diff --git a/docker/zcash-params/Dockerfile b/docker/zcash-params/Dockerfile
index 495d94c4..0dcc7b55 100644
--- a/docker/zcash-params/Dockerfile
+++ b/docker/zcash-params/Dockerfile
@@ -18,12 +18,11 @@ RUN apt-get -qq update && \
     libclang-dev \
     clang \
     ca-certificates \
+    cmake \
+    protobuf-compiler \
     ; \
     rm -rf /var/lib/apt/lists/* /tmp/*
 
-# Optimize builds. In particular, regenerate-stateful-test-disks.yml was reaching the
-# GitHub Actions time limit (6 hours), so we needed to make it faster.
-ENV RUSTFLAGS -O
 ENV CARGO_HOME /app/.cargo/
 # Build dependencies - this is the caching Docker layer!
 RUN cargo chef cook --release --features enable-sentry --recipe-path recipe.json