diff --git a/builder/dockerfile.ubuntu_focal.deb.build b/builder/dockerfile.ubuntu_focal.deb.build
index 8a4db12..ffe6402 100644
--- a/builder/dockerfile.ubuntu_focal.deb.build
+++ b/builder/dockerfile.ubuntu_focal.deb.build
@@ -3,7 +3,7 @@ FROM ubuntu:focal
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update && \
-      apt-get -y install vim build-essential devscripts equivs
+      apt-get -y install vim build-essential devscripts equivs libtbb-dev
 
 # Install build-deps for the package.
 COPY ./debian/control /tmp