diff --git a/Dockerfile.rust b/Dockerfile.rust
index 6453ffeb..8f6341ed 100644
--- a/Dockerfile.rust
+++ b/Dockerfile.rust
@@ -22,6 +22,7 @@ RUN cargo chef cook --release --recipe-path recipe.json --target x86_64-unknown-
 
 COPY Cargo.toml /build/
 COPY Cargo.lock /build/
+COPY proto/ /build/proto
 
 # this needs to match workspaces in Cargo.toml
 COPY lib/libpk /build/lib/libpk