diff --git a/docs/INSTALL.ubuntu1804.md b/docs/INSTALL.ubuntu1804.md
index 7d9369ecf..588745ca1 100644
--- a/docs/INSTALL.ubuntu1804.md
+++ b/docs/INSTALL.ubuntu1804.md
@@ -173,6 +173,9 @@ installCore () {
   # install lief
   $SUDO_WWW ${PATH_TO_MISP}/venv/bin/pip install https://github.com/lief-project/packages/raw/lief-master-latest/pylief-0.9.0.dev.zip
 
+  # install zmq needed by mispzmq
+  $SUDO_WWW ${PATH_TO_MISP}/venv/bin/pip install zmq
+
   # install python-magic
   $SUDO_WWW ${PATH_TO_MISP}/venv/bin/pip install python-magic