diff --git a/backend.dockerfile b/backend.dockerfile
index 1154900..8e79fbd 100644
--- a/backend.dockerfile
+++ b/backend.dockerfile
@@ -16,6 +16,7 @@ COPY README.md ./python/
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libpq-dev \
     gcc \
+    g++ \
     python3-dev \
     && rm -rf /var/lib/apt/lists/*