diff --git a/systems/LoutreOS/services.nix b/systems/LoutreOS/services.nix
index e6904c2f0..95ac77b22 100644
--- a/systems/LoutreOS/services.nix
+++ b/systems/LoutreOS/services.nix
@@ -229,6 +229,11 @@ in
     '';
   };
 
+  systemd.services.matrix-synapse.serviceConfig = {
+    MemoryHigh = "3G";
+    MemoryMax = "4G";
+  };
+
   services.pgmanage.enable = true;
   services.pgmanage.port = pgmanage_port;
   services.pgmanage.connections = {