diff --git a/package-lock.json b/package-lock.json
index d7d2328..cc35329 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -895,9 +895,9 @@
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     "@types/socket.io-client": {
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-      "resolved": "https://registry.npmjs.org/@types/socket.io-client/-/socket.io-client-1.4.32.tgz",
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+      "version": "1.4.36",
+      "resolved": "https://registry.npmjs.org/@types/socket.io-client/-/socket.io-client-1.4.36.tgz",
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     "@vue/babel-helper-vue-jsx-merge-props": {
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@@ -2588,7 +2588,8 @@
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       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
+      "optional": true
     },
     "coa": {
       "version": "2.0.2",
@@ -5170,7 +5171,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "aproba": {
           "version": "1.2.0",
@@ -5188,11 +5190,13 @@
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         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -5205,15 +5209,18 @@
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         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -5316,7 +5323,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -5326,6 +5334,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -5338,17 +5347,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -5365,6 +5377,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -5437,7 +5450,8 @@
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         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -5447,6 +5461,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -5522,7 +5537,8 @@
         },
         "safe-buffer": {
           "version": "5.1.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -5552,6 +5568,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -5569,6 +5586,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -5607,11 +5625,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -6154,7 +6174,7 @@
     "immediate": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.0.6.tgz",
-      "integrity": "sha1-nbHb0Pr43m++D13V5Wu2BigN5ps="
+      "integrity": "sha512-XXOFtyqDjNDAQxVfYxuF7g9Il/IbWmmlQg2MYKOH8ExIT1qg6xc4zyS3HaEEATgs1btfzxq15ciUiY7gjSXRGQ=="
     },
     "import-cwd": {
       "version": "2.1.0",
@@ -6752,9 +6772,9 @@
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     "jszip": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/jszip/-/jszip-3.2.2.tgz",
-      "integrity": "sha512-NmKajvAFQpbg3taXQXr/ccS2wcucR1AZ+NtyWp2Nq7HHVsXhcJFR8p0Baf32C2yVvBylFWVeKf+WI2AnvlPhpA==",
+      "version": "3.7.0",
+      "resolved": "https://registry.npmjs.org/jszip/-/jszip-3.7.0.tgz",
+      "integrity": "sha512-Y2OlFIzrDOPWUnpU0LORIcDn2xN7rC9yKffFM/7pGhQuhO+SUhfm2trkJ/S5amjFvem0Y+1EALz/MEPkvHXVNw==",
       "requires": {
         "lie": "~3.3.0",
         "pako": "~1.0.2",
@@ -9149,7 +9169,8 @@
     "rx-lite": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
-      "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ="
+      "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
+      "optional": true
     },
     "rx-lite-aggregates": {
       "version": "4.0.8",
@@ -9382,7 +9403,7 @@
     "set-immediate-shim": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz",
-      "integrity": "sha1-SysbJ+uAip+NzEgaWOXlb1mfP2E="
+      "integrity": "sha512-Li5AOqrZWCVA2n5kryzEmqai6bKSIvpz5oUJHPVj6+dsbD3X1ixtsY5tEnsaNpH3pFAHmG8eIHUrtEtohrg+UQ=="
     },
     "set-value": {
       "version": "2.0.1",
@@ -10987,11 +11008,11 @@
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     },
     "vue-socket.io-extended": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/vue-socket.io-extended/-/vue-socket.io-extended-4.0.0.tgz",
-      "integrity": "sha512-NmPcujcAdKBBY6iV8/C5em5hdy/rwrxLC2ONNBfdPrctB84QT0Rq1X5bh5Ct3I2w8T6y/hCqR159dJwWf+mTow==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/vue-socket.io-extended/-/vue-socket.io-extended-4.2.0.tgz",
+      "integrity": "sha512-3ZHy53W4CpzRdTZjWL7krq80FQlnK6IyOG0ur158pij1PXKyVBYDpjE0/3SluK7NeNTqefa/Y8RFCFy6BISG/g==",
       "requires": {
-        "@types/socket.io-client": "1.4.32"
+        "@types/socket.io-client": "1.4.36"
       }
     },
     "vue-style-loader": {
diff --git a/package.json b/package.json
index 70779b4..7020de8 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "flowchart.js": "^1.11.3",
     "github-markdown-css": "^2.10.0",
     "jace-front": "github:boldak/jace-front",
-    "jszip": "^3.2.2",
+    "jszip": "^3.7.0",
     "katex": "^0.10.1",
     "leaflet": "^1.3.4",
     "lodash": "^4.17.11",