diff --git a/package-lock.json b/package-lock.json
index daabe13..533f685 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -846,6 +846,11 @@
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@@ -1682,6 +1688,12 @@
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@@ -2316,6 +2356,12 @@
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@@ -2528,10 +2574,20 @@
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@@ -2847,6 +2903,7 @@
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+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
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+    "common-tags": {
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+      "resolved": "https://registry.npmjs.org/common-tags/-/common-tags-1.8.2.tgz",
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@@ -3868,6 +3932,12 @@
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+      "resolved": "https://registry.npmjs.org/dlv/-/dlv-1.1.3.tgz",
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@@ -4042,6 +4112,133 @@
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+      "resolved": "https://registry.npmjs.org/elm/-/elm-0.19.0.tgz",
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+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
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@@ -5125,6 +5323,24 @@
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+      "resolved": "https://registry.npmjs.org/find-elm-dependencies/-/find-elm-dependencies-2.0.4.tgz",
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+      "dev": true,
+      "requires": {
+        "firstline": "^1.2.0",
+        "lodash": "^4.17.19"
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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@@ -5134,6 +5350,12 @@
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@@ -5294,7 +5516,8 @@
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@@ -5335,17 +5560,20 @@
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@@ -5462,7 +5690,8 @@
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@@ -5474,6 +5703,7 @@
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@@ -5488,6 +5718,7 @@
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@@ -5495,12 +5726,14 @@
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@@ -5519,6 +5752,7 @@
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@@ -5599,7 +5833,8 @@
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@@ -5696,7 +5932,8 @@
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@@ -5732,6 +5969,7 @@
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@@ -5751,6 +5989,7 @@
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@@ -5794,12 +6033,14 @@
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-      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
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@@ -7366,6 +7608,12 @@
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+      "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
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@@ -7384,6 +7632,12 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/lodash.unescape/-/lodash.unescape-4.0.1.tgz",
+      "integrity": "sha1-vyJJiGzlFM2hEvrpIYzcBlIR/Jw=",
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       "resolved": "https://registry.npmjs.org/vue-hot-reload-api/-/vue-hot-reload-api-2.3.1.tgz",
@@ -12012,6 +12967,14 @@
       "integrity": "sha512-cliV19VHLJqFUYbz/XeWXe5CO6guzwd0yrrqqp0bmjlMP3ZZULY7fu8RTC4+3lmHwo6ESVDHFDsvjB15hcR5IA==",
       "dev": true
     },
+    "vuedraggable": {
+      "version": "2.24.3",
+      "resolved": "https://registry.npmjs.org/vuedraggable/-/vuedraggable-2.24.3.tgz",
+      "integrity": "sha512-6/HDXi92GzB+Hcs9fC6PAAozK1RLt1ewPTLjK0anTYguXLAeySDmcnqE8IC0xa7shvSzRjQXq3/+dsZ7ETGF3g==",
+      "requires": {
+        "sortablejs": "1.10.2"
+      }
+    },
     "vuex": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/vuex/-/vuex-3.1.0.tgz",
diff --git a/package.json b/package.json
index dd3e7a3..7c88b71 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "bootstrap": "^4.1.3",
     "highlight.js": "^9.13.0",
     "lodash": "^4.17.11",
-    "marked": "^0.5.0",
+    "marked": "^4.0.10",
     "path-to-regexp": "^3.0.0",
     "rustpython_wasm": "0.1.0-pre-alpha.1",
     "vue": "^2.5.17",
diff --git a/yarn.lock b/yarn.lock
index 4a5da2e..c7c0c71 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5632,21 +5632,16 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-marked@*:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-0.6.0.tgz#a18d01cfdcf8d15c3c455b71c8329e5e0f01faa1"
-  integrity sha512-HduzIW2xApSXKXJSpCipSxKyvMbwRRa/TwMbepmlZziKdH8548WSoDP4SxzulEKjlo8BE39l+2fwJZuRKOln6g==
+marked@*, marked@^4.0.10:
+  version "4.0.10"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-4.0.10.tgz#423e295385cc0c3a70fa495e0df68b007b879423"
+  integrity sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==
 
 marked@^0.3.6:
   version "0.3.19"
   resolved "https://registry.yarnpkg.com/marked/-/marked-0.3.19.tgz#5d47f709c4c9fc3c216b6d46127280f40b39d790"
   integrity sha512-ea2eGWOqNxPcXv8dyERdSr/6FmzvWwzjMxpfGB/sbMccXoct+xY+YukPD+QTUZwyvK7BZwcr4m21WBOW41pAkg==
 
-marked@^0.5.0:
-  version "0.5.2"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-0.5.2.tgz#3efdb27b1fd0ecec4f5aba362bddcd18120e5ba9"
-  integrity sha512-fdZvBa7/vSQIZCi4uuwo2N3q+7jJURpMVCcbaX0S1Mg65WZ5ilXvC67MviJAsdjqqgD+CEq4RKo5AYGgINkVAA==
-
 "match-stream@>= 0.0.2 < 1":
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/match-stream/-/match-stream-0.0.2.tgz#99eb050093b34dffade421b9ac0b410a9cfa17cf"