diff --git a/deprecated-packages/mdxc/package.json b/deprecated-packages/mdxc/package.json
index 91c854e..c84dc77 100644
--- a/deprecated-packages/mdxc/package.json
+++ b/deprecated-packages/mdxc/package.json
@@ -34,7 +34,7 @@
     "babel-standalone": "^6.26.0",
     "commander": "^2.9.0",
     "front-matter": "^2.1.2",
-    "markdown-it": "^8.2.2",
+    "markdown-it": "^12.3.2",
     "parsimmon": "^1.2.0",
     "slugify": "^1.1.0"
   }
diff --git a/deprecated-packages/mdxc/yarn.lock b/deprecated-packages/mdxc/yarn.lock
index f60ac8b..0834afd 100644
--- a/deprecated-packages/mdxc/yarn.lock
+++ b/deprecated-packages/mdxc/yarn.lock
@@ -45,6 +45,10 @@ argparse@^1.0.7, "argparse@~ 1.0.0":
   dependencies:
     sprintf-js "~1.0.2"
 
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+
 arr-diff@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-2.0.0.tgz#8f3b827f955a8bd669697e4a4256ac3ceae356cf"
@@ -306,7 +310,7 @@ babel-plugin-syntax-flow@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-flow/-/babel-plugin-syntax-flow-6.18.0.tgz#4c3ab20a2af26aa20cd25995c398c4eb70310c8d"
 
-babel-plugin-syntax-jsx@^6.18.0, babel-plugin-syntax-jsx@^6.3.13, babel-plugin-syntax-jsx@^6.8.0:
+babel-plugin-syntax-jsx@^6.3.13, babel-plugin-syntax-jsx@^6.8.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz#0af32a9a6e13ca7a3fd5069e62d7b0f58d0d8946"
 
@@ -551,7 +555,7 @@ babel-plugin-transform-react-jsx-source@6.22.0, babel-plugin-transform-react-jsx
     babel-plugin-syntax-jsx "^6.8.0"
     babel-runtime "^6.22.0"
 
-babel-plugin-transform-react-jsx@6.24.1, babel-plugin-transform-react-jsx@^6.23.0, babel-plugin-transform-react-jsx@^6.24.1:
+babel-plugin-transform-react-jsx@6.24.1, babel-plugin-transform-react-jsx@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-react-jsx/-/babel-plugin-transform-react-jsx-6.24.1.tgz#840a028e7df460dfc3a2d29f0c0d91f6376e66a3"
   dependencies:
@@ -675,6 +679,10 @@ babel-runtime@^6.18.0, babel-runtime@^6.22.0, babel-runtime@^6.26.0:
     core-js "^2.4.0"
     regenerator-runtime "^0.11.0"
 
+babel-standalone@^6.26.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-standalone/-/babel-standalone-6.26.0.tgz#15fb3d35f2c456695815ebf1ed96fe7f015b6886"
+
 babel-template@^6.24.1, babel-template@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.26.0.tgz#de03e2d16396b069f46dd9fff8521fb1a0e35e02"
@@ -929,9 +937,9 @@ electron-to-chromium@^1.3.30:
   version "1.3.33"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.33.tgz#bf00703d62a7c65238136578c352d6c5c042a545"
 
-entities@~1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/entities/-/entities-1.1.1.tgz#6e5c2d0a5621b5dadaecef80b90edfb5cd7772f0"
+entities@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/entities/-/entities-2.1.0.tgz#992d3129cf7df6870b96c57858c249a120f8b8b5"
 
 escape-string-regexp@1.0.5, escape-string-regexp@^1.0.2:
   version "1.0.5"
@@ -1370,9 +1378,9 @@ kind-of@^4.0.0:
   dependencies:
     is-buffer "^1.1.5"
 
-linkify-it@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/linkify-it/-/linkify-it-2.0.3.tgz#d94a4648f9b1c179d64fa97291268bdb6ce9434f"
+linkify-it@^3.0.1:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/linkify-it/-/linkify-it-3.0.3.tgz#a98baf44ce45a550efb4d49c769d07524cc2fa2e"
   dependencies:
     uc.micro "^1.0.1"
 
@@ -1452,13 +1460,13 @@ markdown-it-testgen@^0.1.4:
     js-yaml "~ 3.2.4"
     lodash "~ 2.4.1"
 
-markdown-it@^8.2.2:
-  version "8.4.1"
-  resolved "https://registry.yarnpkg.com/markdown-it/-/markdown-it-8.4.1.tgz#206fe59b0e4e1b78a7c73250af9b34a4ad0aaf44"
+markdown-it@^12.3.2:
+  version "12.3.2"
+  resolved "https://registry.yarnpkg.com/markdown-it/-/markdown-it-12.3.2.tgz#bf92ac92283fe983fe4de8ff8abfb5ad72cd0c90"
   dependencies:
-    argparse "^1.0.7"
-    entities "~1.1.1"
-    linkify-it "^2.0.0"
+    argparse "^2.0.1"
+    entities "~2.1.0"
+    linkify-it "^3.0.1"
     mdurl "^1.0.1"
     uc.micro "^1.0.5"