diff --git a/Dockerfile b/Dockerfile
index 44bc9de..7d628b5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ RUN apk add --no-cache musl-dev openssl-dev openssl-libs-static protobuf-dev lld
 WORKDIR /app
 
 # this optimizes build time by putting the dependencies in a seperate docker layer, speeding up future builds
+COPY Cargo.toml Cargo.lock ./
 COPY mii ./mii
 RUN mkdir src && echo "fn main() {}" > src/main.rs && cargo fetch