diff --git a/packages/docusaurus-theme-classic/package.json b/packages/docusaurus-theme-classic/package.json
index ba9b24e9962d..dc3f45af203e 100644
--- a/packages/docusaurus-theme-classic/package.json
+++ b/packages/docusaurus-theme-classic/package.json
@@ -13,6 +13,7 @@
     "classnames": "^2.2.6",
     "clipboard": "^2.0.4",
     "infima": "0.2.0-alpha.5",
+    "prismjs": "^1.17.1",
     "parse-numeric-range": "^0.0.2",
     "prism-react-renderer": "^1.0.2",
     "react-router-dom": "^5.1.2",
diff --git a/packages/docusaurus-theme-classic/src/theme/SearchBar.js b/packages/docusaurus-theme-classic/src/theme/SearchBar.js
index 64d5d63f7533..5ce87930a5e5 100644
--- a/packages/docusaurus-theme-classic/src/theme/SearchBar.js
+++ b/packages/docusaurus-theme-classic/src/theme/SearchBar.js
@@ -5,4 +5,4 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-export {default} from '@docusaurus/noop';
+export {default} from '@docusaurus/Noop';