diff --git a/ansible/roles/gsm-tester/tasks/main.yml b/ansible/roles/gsm-tester/tasks/main.yml
index 30d18d4a..8a854bdc 100644
--- a/ansible/roles/gsm-tester/tasks/main.yml
+++ b/ansible/roles/gsm-tester/tasks/main.yml
@@ -35,6 +35,7 @@
     - libasound2-dev
     - mdbus2
     - liblua5.3-dev
+    - lua-socket
 
 - name: install ofono build dependencies
   apt: