diff --git a/delft/eris.nix b/delft/eris.nix
index 3ec99104..c2d767ad 100644
--- a/delft/eris.nix
+++ b/delft/eris.nix
@@ -551,6 +551,18 @@ in
           }
         ];
       }
+
+      {
+        job_name = "synapse";
+        scheme = "https";
+        static_configs = [
+          {
+            targets = [
+              "matrix.nixos.org:443"
+            ];
+          }
+        ];
+      }
     ]
     ++ (
       let