diff --git a/Dockerfile b/Dockerfile
index 6c0b6ac..5a0961e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,7 @@ RUN \
     coinor-libcbc-dev  \
     coinor-libsymphony-dev \
     curl \
+    flac \
     fonts-emojione \
     git \
     global \