diff --git a/apps/alexa-simulator/package.json b/apps/alexa-simulator/package.json
index 2bff3c4..2d4e879 100644
--- a/apps/alexa-simulator/package.json
+++ b/apps/alexa-simulator/package.json
@@ -14,7 +14,7 @@
     "@aws-sdk/credential-provider-node": "^3.972.82",
     "@modelcontextprotocol/client": "^2.3.1",
     "@smithy/protocol-http": "^5.6.2",
-    "@smithy/signature-v4": "^5.7.3",
+    "@smithy/signature-v4": "^5.7.4",
     "express": "^5.2.1"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 1429434..fe4d111 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -54,8 +54,8 @@ importers:
         specifier: ^5.6.2
         version: 5.6.2
       '@smithy/signature-v4':
-        specifier: ^5.7.3
-        version: 5.7.3
+        specifier: ^5.7.4
+        version: 5.7.4
       express:
         specifier: ^5.2.1
         version: 5.2.1(supports-color@8.1.1)
@@ -689,6 +689,10 @@ packages:
     resolution: {integrity: sha512-CsOeKq/9kA3y6VJHt+/+VTCtBaxJ4OTFpgrjIUhPpDIKxBci1k2bJaQASF2h/ELWrulGp+t97DZ0mevfAD8idg==}
     engines: {node: '>=18.0.0'}
 
+  '@smithy/core@3.36.0':
+    resolution: {integrity: sha512-3hJiwG1F5t1SoXqp/yOCmYXziyx7ZVqF63S5W6YU201e/qwVaHPex+E/3vvyY9a3ORq/b+BydeNZpP2saQ9X2g==}
+    engines: {node: '>=18.0.0'}
+
   '@smithy/credential-provider-imds@4.5.2':
     resolution: {integrity: sha512-A9uSdn72ozbRUSit0eib0TW7nXuNPlaeM0zcGkJ+nE6tFcSDbnmtwoxbTCFBukVQcszDAyvsd7+rTduPTXpygg==}
     engines: {node: '>=18.0.0'}
@@ -713,10 +717,18 @@ packages:
     resolution: {integrity: sha512-7ImGm+FkHRLcBaRttIAMZ6bzJZWb2cJGoYjq46F2UjycujWzrL9GEN9h4w7eQyXJYnltrUhxbbieBAIRrdqpow==}
     engines: {node: '>=18.0.0'}
 
+  '@smithy/signature-v4@5.7.4':
+    resolution: {integrity: sha512-tHy0K0VtqNd5Y7Y41h0a0Lhh0L1GzC08dTWg0F7vRJWFtTENg7IZikf3wQkanYIRdb7ngoIPMTmqgUi401fEeQ==}
+    engines: {node: '>=18.0.0'}
+
   '@smithy/types@4.18.0':
     resolution: {integrity: sha512-CgB6HHWer/vrKps24ulRIbpcpb7K4xAU7SkZ7YHzBPlwHsvsrCJFEXK421s+cJzX+ZrqtA/TuU5w1HzI7k9N8A==}
     engines: {node: '>=18.0.0'}
 
+  '@smithy/types@4.19.0':
+    resolution: {integrity: sha512-r7jh49VJxGerfAcTQA6gXcKc+98zOp/tqRwzYjgOE+iSQsP6cEU1hq2QzbuipmP68QtYdY9wKEhiCQZIzHgZ4Q==}
+    engines: {node: '>=18.0.0'}
+
   '@smithy/util-buffer-from@2.2.0':
     resolution: {integrity: sha512-IJdWBbTcMQ6DA0gdNhh/BwrLkDR+ADW5Kr1aZmd4k3DIF6ezMV4R2NIAmT08wQJ3yUK82thHWmC/TnK/wpMMIA==}
     engines: {node: '>=14.0.0'}
@@ -1918,6 +1930,11 @@ snapshots:
       '@smithy/types': 4.18.0
       tslib: 2.8.1
 
+  '@smithy/core@3.36.0':
+    dependencies:
+      '@smithy/types': 4.19.0
+      tslib: 2.8.1
+
   '@smithy/credential-provider-imds@4.5.2':
     dependencies:
       '@smithy/core': 3.33.3
@@ -1951,10 +1968,20 @@ snapshots:
       '@smithy/types': 4.18.0
       tslib: 2.8.1
 
+  '@smithy/signature-v4@5.7.4':
+    dependencies:
+      '@smithy/core': 3.36.0
+      '@smithy/types': 4.19.0
+      tslib: 2.8.1
+
   '@smithy/types@4.18.0':
     dependencies:
       tslib: 2.8.1
 
+  '@smithy/types@4.19.0':
+    dependencies:
+      tslib: 2.8.1
+
   '@smithy/util-buffer-from@2.2.0':
     dependencies:
       '@smithy/is-array-buffer': 2.2.0