diff --git a/serverless/tut1/package-lock.json b/serverless/tut1/package-lock.json
index ae5b319..5cf27a9 100644
--- a/serverless/tut1/package-lock.json
+++ b/serverless/tut1/package-lock.json
@@ -360,7 +360,7 @@
     "cookiejar": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/cookiejar/-/cookiejar-2.1.1.tgz",
-      "integrity": "sha1-Qa1XsbVVlR7BcUEqgZQrHoIA00o="
+      "integrity": "sha512-hlWcCbN6fF2cu3hQzCWeRfkXLtMB7cNAsqWZ66cU9b3WUtvEA/v9fmUXU/O3FduAX+pnBeQTdzlRBC58cwyQQQ=="
     },
     "core-util-is": {
       "version": "1.0.2",
@@ -1525,14 +1525,6 @@
       "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.9.tgz",
       "integrity": "sha1-qPbq7KkGdMMz58Q5U/J1tFFRBpU="
     },
-    "string_decoder": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
-      "requires": {
-        "safe-buffer": "5.1.1"
-      }
-    },
     "string-width": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@@ -1543,6 +1535,14 @@
         "strip-ansi": "3.0.1"
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
diff --git a/serverless/tut1/yarn.lock b/serverless/tut1/yarn.lock
index f1426ce..1412b54 100644
--- a/serverless/tut1/yarn.lock
+++ b/serverless/tut1/yarn.lock
@@ -303,8 +303,8 @@ cookie@0.3.1:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
 cookiejar@^2.1.0:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.1.tgz#41ad57b1b555951ec171412a81942b1e8200d34a"
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.4.tgz#ee669c1fea2cf42dc31585469d193fef0d65771b"
 
 core-util-is@~1.0.0:
   version "1.0.2"