diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4a78bd1..8563b7e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -44,3 +44,7 @@ downstream-wikijs:
 downstream-minecraft:
   stage: .post
   trigger: containers/minecraft
+downstream-matrix-synapse:
+  stage: .post
+  trigger: containers/matrix-synapse
+