diff --git a/packages/gatsby-theme-blog/package.json b/packages/gatsby-theme-blog/package.json
index 7ac48833..0da1f2ac 100644
--- a/packages/gatsby-theme-blog/package.json
+++ b/packages/gatsby-theme-blog/package.json
@@ -26,7 +26,7 @@
     "gatsby-plugin-react-helmet": "^3.3.10",
     "gatsby-plugin-theme-ui": "0.4.0-alpha.3",
     "gatsby-plugin-twitter": "^2.3.10",
-    "gatsby-theme-blog-core": "^2.0.2",
+    "gatsby-theme-blog-core": "^4.0.0",
     "gatsby-theme-ui-preset": "^1.0.2",
     "mdx-utils": "0.2.0",
     "react-helmet": "^5.2.1",