diff --git a/gatsby-theme-firebase/package.json b/gatsby-theme-firebase/package.json
index f365877..430c404 100644
--- a/gatsby-theme-firebase/package.json
+++ b/gatsby-theme-firebase/package.json
@@ -17,7 +17,7 @@
   },
   "dependencies": {
     "@emotion/core": "^10.0.17",
-    "@mdx-js/react": "^1.4.0",
+    "@mdx-js/react": "^1.6.22",
     "firebase": "^7.5.0",
     "gatsby-plugin-emotion": "^4.1.16",
     "gatsby-plugin-theme-ui": "^0.2.43",
diff --git a/yarn.lock b/yarn.lock
index b30d67f..e0c143c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1510,10 +1510,10 @@
   dependencies:
     core-js "^2.5.7"
 
-"@mdx-js/react@^1.1.1", "@mdx-js/react@^1.4.0":
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/@mdx-js/react/-/react-1.4.0.tgz#b389684b4b5fbfb6770a6cc0d620fca82b8a8549"
-  integrity sha512-UHPG74qvLM8wO+evIKzNQqSw3PzgPei4oEFPuFGee15rK0cYNDKL+utzQLM1Ngv2gmjU/WN9BYrpJxyFh8xOCg==
+"@mdx-js/react@^1.1.1", "@mdx-js/react@^1.6.22":
+  version "1.6.22"
+  resolved "https://registry.yarnpkg.com/@mdx-js/react/-/react-1.6.22.tgz#ae09b4744fddc74714ee9f9d6f17a66e77c43573"
+  integrity sha512-TDoPum4SHdfPiGSAaRBw7ECyI8VaHpK8GJugbJIJuqyh6kzw9ZLJZW3HGL3NNrJGxcAixUvqROm+YuQOo5eXtg==
 
 "@mikaelkristiansson/domready@^1.0.9":
   version "1.0.9"