diff --git a/server-in-memory/package-lock.json b/server-in-memory/package-lock.json
index 08e3774..2877231 100644
--- a/server-in-memory/package-lock.json
+++ b/server-in-memory/package-lock.json
@@ -111,7 +111,7 @@
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-        "safe-buffer": "5.1.2"
+        "safe-buffer": "^5.0.1"
       }
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     "ee-first": {
@@ -179,14 +179,14 @@
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     },
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-      "resolved": "https://registry.npmjs.org/express-jwt/-/express-jwt-5.3.1.tgz",
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+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/express-jwt/-/express-jwt-6.0.0.tgz",
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-        "express-unless": "0.3.1",
-        "jsonwebtoken": "8.5.0",
-        "lodash.set": "4.3.2"
+        "async": "^1.5.0",
+        "express-unless": "^0.3.0",
+        "jsonwebtoken": "^8.1.0",
+        "lodash.set": "^4.0.0"
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     "express-unless": {
@@ -255,46 +255,46 @@
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-      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.0.tgz",
-      "integrity": "sha512-IqEycp0znWHNA11TpYi77bVgyBO/pGESDh7Ajhas+u0ttkGkKYIIAjniL4Bw5+oVejVF+SYkaI7XKfwCCyeTuA==",
+      "version": "8.5.1",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
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-        "lodash.includes": "4.3.0",
-        "lodash.isboolean": "3.0.3",
-        "lodash.isinteger": "4.0.4",
-        "lodash.isnumber": "3.0.3",
-        "lodash.isplainobject": "4.0.6",
-        "lodash.isstring": "4.0.1",
-        "lodash.once": "4.1.1",
-        "ms": "2.1.1",
-        "semver": "5.6.0"
+        "jws": "^3.2.2",
+        "lodash.includes": "^4.3.0",
+        "lodash.isboolean": "^3.0.3",
+        "lodash.isinteger": "^4.0.4",
+        "lodash.isnumber": "^3.0.3",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.isstring": "^4.0.1",
+        "lodash.once": "^4.0.0",
+        "ms": "^2.1.1",
+        "semver": "^5.6.0"
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-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
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     "jwa": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.3.0.tgz",
-      "integrity": "sha512-SxObIyzv9a6MYuZYaSN6DhSm9j3+qkokwvCB0/OTSV5ylPq1wUQiygZQcHT5Qlux0I5kmISx3J86TxKhuefItg==",
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.1.tgz",
+      "integrity": "sha512-qiLX/xhEEFKUAJ6FiBMbes3w9ATzyk5W7Hvzpa/SLYdxNtng+gcurvrI7TbACjIXlsJyr05/S1oUhZrc63evQA==",
       "requires": {
         "buffer-equal-constant-time": "1.0.1",
         "ecdsa-sig-formatter": "1.0.11",
-        "safe-buffer": "5.1.2"
+        "safe-buffer": "^5.0.1"
       }
     },
     "jws": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.1.tgz",
-      "integrity": "sha512-bGA2omSrFUkd72dhh05bIAN832znP4wOU3lfuXtRBuGTbsmNmDXMQg28f0Vsxaxgk4myF5YkKQpz6qeRpMgX9g==",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.2.tgz",
+      "integrity": "sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==",
       "requires": {
-        "jwa": "1.3.0",
-        "safe-buffer": "5.1.2"
+        "jwa": "^1.4.1",
+        "safe-buffer": "^5.0.1"
       }
     },
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@@ -444,9 +444,9 @@
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     },
     "semver": {
-      "version": "5.6.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
-      "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg=="
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
     },
     "send": {
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diff --git a/server-in-memory/package.json b/server-in-memory/package.json
index 438f891..6a1a7d6 100644
--- a/server-in-memory/package.json
+++ b/server-in-memory/package.json
@@ -20,6 +20,6 @@
     "cookie-parser": "^1.4.4",
     "cors": "^2.8.5",
     "express": "^4.16.4",
-    "express-jwt": "^5.3.1"
+    "express-jwt": "^6.0.0"
   }
 }