diff --git a/Dockerfile b/Dockerfile
index 18dc716..1ff8fd8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,10 +10,12 @@ RUN echo "Browser library download: ${BROWSER_LIBS_REFRESH}" \
 FROM rust:slim-trixie AS builder
 WORKDIR /app
 
-COPY Cargo.toml Cargo.lock ./
+COPY Cargo.toml Cargo.lock build.rs ./
+COPY lang ./lang
 COPY migrations ./migrations
 COPY src ./src
 COPY static ./static
+
 COPY --from=browser-libs /app/static/libs/mermaid ./static/libs/mermaid
 COPY --from=browser-libs /app/static/libs/highlight ./static/libs/highlight