diff --git a/defaults/main.yml b/defaults/main.yml
index 23ce481..195cb2e 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,5 +1,5 @@
 ---
-matrix_version: "1.2.1"
+matrix_version: "1.12.0"
 
 matrix_user: matrix
 matrix_user_home: "/home/{{ matrix_user }}"
diff --git a/tasks/install.yml b/tasks/install.yml
index b6b279f..607bd3c 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -25,6 +25,7 @@
         - pip
         - setuptools
         - "psycopg2~=2.7.0"
+        - "Twisted>=20.3.0"
 
     - name: Install Synapse in virtualenv
       pip: