diff --git a/gatsby-theme-code-notes/package.json b/gatsby-theme-code-notes/package.json
index 4e95fda..f2b3970 100644
--- a/gatsby-theme-code-notes/package.json
+++ b/gatsby-theme-code-notes/package.json
@@ -56,7 +56,7 @@
     "gatsby-plugin-react-helmet": "^4.3.0",
     "gatsby-plugin-redirects": "^1.0.0",
     "gatsby-plugin-sharp": "^3.3.1",
-    "gatsby-plugin-theme-ui": "0.7.3",
+    "gatsby-plugin-theme-ui": "0.15.5",
     "gatsby-plugin-typescript": "^3.3.0",
     "gatsby-remark-double-brackets-link": "^0.1.8",
     "gatsby-remark-images": "^5.0.0",