diff --git a/.dockerignore b/.dockerignore
index f8d44c80..8620b636 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -11,5 +11,4 @@ README.md
 
 # Cargo files
 **/*.rs.bk
-/target/
-Cargo.lock
\ No newline at end of file
+/target/
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index aab5e695..56b75290 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,10 +11,11 @@ WORKDIR "/parrot"
 RUN mkdir src
 RUN echo "fn main() {}" > src/main.rs
 COPY Cargo.toml ./
-RUN cargo build --release
+COPY Cargo.lock ./
+RUN cargo build --release --locked
 
 COPY . .
-RUN cargo build --release
+RUN cargo build --release --locked
 
 # Release image
 # Necessary dependencies to run Parrot