diff --git a/specs/BurnerRouter.md b/specs/BurnerRouter.md
index 7e5f924..83b7a20 100644
--- a/specs/BurnerRouter.md
+++ b/specs/BurnerRouter.md
@@ -11,12 +11,17 @@ The Burner Router allows redirecting the slashed collateral tokens to different
    - Before the Vault's creation, deploy a new Burner Router via `BurnerRouterFactory` with the same collateral address as the Vault will use
    - Deploy the Vault inputting the received `BurnerRouter` address and `IBaseSlasher.BaseParams.isBurnerHook` set to `true`
 
-2. Slashing
+2. Update setup
+
+   - Change global receiver, network-specific receivers, operator-network-specific receivers with the configured delay (in case of pending set requests, they are overrided with the new ones)
+   - Change `delay` itself after the delay (in case of pending set requests, they are overrided with the new ones)
+
+3. Slashing
 
    - The router is called via `onSlash()` function
    - It determines the needed address for redirection and saves the redirection amount for it
 
-3. Trigger transfer
+4. Trigger transfer
 
    - Transfers a given account's whole balance from the router to this account
 
diff --git a/src/contracts/router/BurnerRouter.sol b/src/contracts/router/BurnerRouter.sol
index 7b87915..6573ef6 100644
--- a/src/contracts/router/BurnerRouter.sol
+++ b/src/contracts/router/BurnerRouter.sol
@@ -70,6 +70,10 @@ contract BurnerRouter is OwnableUpgradeable, IBurnerRouter {
      */
     mapping(address receiver => uint256 amount) public balanceOf;
 
+    constructor() {
+        _disableInitializers();
+    }
+
     /**
      * @inheritdoc IBurner
      */
@@ -172,7 +176,7 @@ contract BurnerRouter is OwnableUpgradeable, IBurnerRouter {
      */
     function setDelay(
         uint48 newDelay
-    ) external {
+    ) external onlyOwner {
         _tryAcceptDelay();
 
         if (pendingDelay.timestamp != 0) {