diff --git a/INSTALL b/INSTALL
index 1ada167c978b56fb88e9b17ed624e1286790171e..ee42cb3f06825c5332eb08e7d374d6ef0888b73a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -58,6 +58,7 @@ For Debian/Ubuntu (likely incomplete list, but goes a long way):
 	apt-get install python-pygresql python-psycopg2 python-mysql.connector  # python mysql and postgresql interfaces
 	apt-get install python-mock python-django            # for some SAS/ tests
 	apt-get install postgresql                           # optional, for some SAS/OTDB_Services/ tests
+	apt-get install libhdf5-dev                          # optional, required by casacore-dev from the KERN-2 suite.
 
 
 For CentOS/Fedora (likely incomplete list, but goes a long way):