diff --git a/book-backend/package-lock.json b/book-backend/package-lock.json
index e30fdc15..1f1de928 100644
--- a/book-backend/package-lock.json
+++ b/book-backend/package-lock.json
@@ -875,7 +875,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -896,12 +897,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -916,17 +919,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1043,7 +1049,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1055,6 +1062,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -1069,6 +1077,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -1076,12 +1085,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -1100,6 +1111,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -1180,7 +1192,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1192,6 +1205,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -1277,7 +1291,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1313,6 +1328,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -1332,6 +1348,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1375,12 +1392,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -3176,9 +3195,9 @@
       }
     },
     "urijs": {
-      "version": "1.19.1",
-      "resolved": "https://registry.npmjs.org/urijs/-/urijs-1.19.1.tgz",
-      "integrity": "sha512-xVrGVi94ueCJNrBSTjWqjvtgvl3cyOTThp2zaMaFNGp3F542TR6sM3f2o8RqZl+AwteClSVmoCyt0ka4RjQOQg=="
+      "version": "1.19.10",
+      "resolved": "https://registry.npmjs.org/urijs/-/urijs-1.19.10.tgz",
+      "integrity": "sha512-EzauQlgKuJgsXOqoMrCiePBf4At5jVqRhXykF3Wfb8ZsOBMxPcfiVBcsHXug4Aepb/ICm2PIgqAUGMelgdrWEg=="
     },
     "urix": {
       "version": "0.1.0",
diff --git a/book-backend/yarn.lock b/book-backend/yarn.lock
index 7d2062da..d41266fe 100644
--- a/book-backend/yarn.lock
+++ b/book-backend/yarn.lock
@@ -2218,9 +2218,9 @@ update-notifier@^2.5.0:
     xdg-basedir "^3.0.0"
 
 urijs@^1.19.0:
-  version "1.19.1"
-  resolved "https://registry.yarnpkg.com/urijs/-/urijs-1.19.1.tgz#5b0ff530c0cbde8386f6342235ba5ca6e995d25a"
-  integrity sha512-xVrGVi94ueCJNrBSTjWqjvtgvl3cyOTThp2zaMaFNGp3F542TR6sM3f2o8RqZl+AwteClSVmoCyt0ka4RjQOQg==
+  version "1.19.10"
+  resolved "https://registry.yarnpkg.com/urijs/-/urijs-1.19.10.tgz#8e2fe70a8192845c180f75074884278f1eea26cb"
+  integrity sha512-EzauQlgKuJgsXOqoMrCiePBf4At5jVqRhXykF3Wfb8ZsOBMxPcfiVBcsHXug4Aepb/ICm2PIgqAUGMelgdrWEg==
 
 urix@^0.1.0:
   version "0.1.0"