diff --git a/debian/control b/debian/control
index 933f57b..4de9e7c 100644
--- a/debian/control
+++ b/debian/control
@@ -8,6 +8,6 @@ Build-Depends: debhelper (>= 10), dh-python, python3 (>= 3.6), dh-systemd (>= 1.
 Package: openwebrx
 Architecture: all
 Depends: python3 (>= 3.6), python3-pkg-resources, csdr (>= 0.15), netcat, owrx-connector (>= 0.1)
-Recommends: digiham (>= 0.2), dsd (>= 1.7)
+Recommends: digiham (>= 0.2), dsd (>= 1.7), sox
 Description: multi-user web sdr
  Open source, multi-user SDR receiver with a web interface
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