diff --git a/Dockerfile.m4 b/Dockerfile.m4
index 8827b2f..c3ac80b 100644
--- a/Dockerfile.m4
+++ b/Dockerfile.m4
@@ -27,6 +27,7 @@ RUN <<-EOF
 		cmake \
 		dbus-x11 \
 		devscripts \
+		doxygen \
 		dpkg-dev \
 		flex \
 		git \