diff --git a/tangostationcontrol/requirements.txt b/tangostationcontrol/requirements.txt
index f2d3743cd07dcea9c3d88255f9a583dfe67f714b..c30f6b56cf6801226f2740f7ab63414516b0b8e2 100644
--- a/tangostationcontrol/requirements.txt
+++ b/tangostationcontrol/requirements.txt
@@ -11,3 +11,4 @@ h5py >= 3.5.0 # BSD
 psutil >= 5.8.0 # BSD
 docker >= 5.0.3 # Apache 2
 python-logstash-async >= 2.3.0 # MIT
+python-casacore >= 3.3.1 # GPL2