diff --git a/package.json b/package.json
index c55f1b1..34a8377 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "final-form": "^4.8.3",
     "lodash": "^4.17.10",
     "markdown-it": "^8.4.2",
-    "markdown-it-highlightjs": "^3.0.0",
+    "markdown-it-highlightjs": "^3.3.1",
     "moment": "^2.22.2",
     "react": "^16.4.1",
     "react-dom": "^16.4.1",
diff --git a/yarn.lock b/yarn.lock
index 65e614c..a0594f9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1802,7 +1802,7 @@ compressible@~2.0.13:
 
 compression@^1.5.2:
   version "1.7.2"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
   dependencies:
     accepts "~1.3.4"
     bytes "3.0.0"
@@ -2761,7 +2761,7 @@ event-emitter@~0.3.5:
 
 event-stream@~3.3.0:
   version "3.3.4"
-  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  resolved "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
   dependencies:
     duplexer "~0.1.1"
     from "~0"
@@ -3473,10 +3473,10 @@ he@1.1.x:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
-highlight.js@^9.9.0:
-  version "9.15.8"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.15.8.tgz#f344fda123f36f1a65490e932cf90569e4999971"
-  integrity sha512-RrapkKQWwE+wKdF73VsOa2RQdIoO3mxwJ4P8mhbI6KYJUraUHRKM5w5zQQKXNk0xNL4UVRdulV9SBJcmzJNzVA==
+highlight.js@^10.2.0:
+  version "10.7.3"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-10.7.3.tgz#697272e3991356e40c3cac566a74eef681756531"
+  integrity sha512-tzcUFauisWKNHaRkN4Wjl/ZA07gENAjFl3J/c480dprkGTg5EQstgaNFqBfUqCq54kZRIEcreTsAgF/m2quD7A==
 
 history@^4.7.2:
   version "4.7.2"
@@ -4747,7 +4747,7 @@ lodash.defaults@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.defaults/-/lodash.defaults-4.2.0.tgz#d09178716ffea4dde9e5fb7b37f6f0802274580c"
 
-lodash.flow@^3.1.0:
+lodash.flow@^3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/lodash.flow/-/lodash.flow-3.5.0.tgz#87bf40292b8cf83e4e8ce1a3ae4209e20071675a"
   integrity sha1-h79AKSuM+D5OjOGjrkIJ4gBxZ1o=
@@ -4859,13 +4859,13 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-markdown-it-highlightjs@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/markdown-it-highlightjs/-/markdown-it-highlightjs-3.0.0.tgz#ed3dd619ca2b98e6bf2112d163bf444043340210"
-  integrity sha1-7T3WGcormOa/IRLRY79EQEM0AhA=
+markdown-it-highlightjs@^3.3.1:
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/markdown-it-highlightjs/-/markdown-it-highlightjs-3.3.1.tgz#38403610487292b8a1ae2d1acc7bb66e4ede6be8"
+  integrity sha512-T9L+37CC+H/aQWHbHCpmo6FvSH2imqXYjZj/Tj064UmPn0aCne/bAtSORo6W5x7BdLIWwbTR20xrdlKDAq0M6w==
   dependencies:
-    highlight.js "^9.9.0"
-    lodash.flow "^3.1.0"
+    highlight.js "^10.2.0"
+    lodash.flow "^3.5.0"
 
 markdown-it@^8.4.2:
   version "8.4.2"