diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7018c41b..9347ffba 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1981,6 +1981,10 @@ packages:
         - tagged-identity
         - req
         - req-conduit
+        - cue-sheet
+        - wave
+        - flac
+        - flac-picture
 
     # "Thomas Bereknyei <tomberek@gmail.com>":
         # - multiplate # bounds: transformers
diff --git a/debian-bootstrap.sh b/debian-bootstrap.sh
index 32e6df55..abcdeddf 100755
--- a/debian-bootstrap.sh
+++ b/debian-bootstrap.sh
@@ -56,6 +56,7 @@ apt-get install -y \
     libedit-dev \
     libedit2 \
     libfftw3-dev \
+    libflac-dev \
     libfreenect-dev \
     libgd2-xpm-dev \
     libgeoip-dev \