diff --git a/packages/docusaurus/package.json b/packages/docusaurus/package.json
index 53e6a7f35e..09911349a2 100644
--- a/packages/docusaurus/package.json
+++ b/packages/docusaurus/package.json
@@ -35,6 +35,8 @@
   },
   "dependencies": {
     "@babel/core": "^7.9.0",
+    "@babel/plugin-proposal-optional-chaining": "^7.10.3",
+    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.10.1",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
     "@babel/plugin-transform-runtime": "^7.9.0",
     "@babel/preset-env": "^7.9.0",
diff --git a/yarn.lock b/yarn.lock
index f52a3befcf..e4f5bf0873 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -301,6 +301,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
   integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
 
+"@babel/helper-plugin-utils@^7.10.1", "@babel/helper-plugin-utils@^7.10.3":
+  version "7.10.3"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.3.tgz#aac45cccf8bc1873b99a85f34bceef3beb5d3244"
+  integrity sha512-j/+j8NAWUTxOtx4LKHybpSClxHoq6I91DQ/mKgAXn5oNUPIUiGppjPIX3TDtJWPrdfP9Kfl7e4fgVMiQR9VE/g==
+
 "@babel/helper-regex@^7.8.3":
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/helper-regex/-/helper-regex-7.8.3.tgz#139772607d51b93f23effe72105b319d2a4c6965"
@@ -434,6 +439,14 @@
     "@babel/helper-plugin-utils" "^7.8.3"
     "@babel/plugin-syntax-json-strings" "^7.8.0"
 
+"@babel/plugin-proposal-nullish-coalescing-operator@^7.10.1":
+  version "7.10.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-nullish-coalescing-operator/-/plugin-proposal-nullish-coalescing-operator-7.10.1.tgz#02dca21673842ff2fe763ac253777f235e9bbf78"
+  integrity sha512-56cI/uHYgL2C8HVuHOuvVowihhX0sxb3nnfVRzUeVHTWmRHTZrKuAh/OBIMggGU/S1g/1D2CRCXqP+3u7vX7iA==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.10.1"
+    "@babel/plugin-syntax-nullish-coalescing-operator" "^7.8.0"
+
 "@babel/plugin-proposal-nullish-coalescing-operator@^7.8.3":
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-nullish-coalescing-operator/-/plugin-proposal-nullish-coalescing-operator-7.8.3.tgz#e4572253fdeed65cddeecfdab3f928afeb2fd5d2"
@@ -483,6 +496,14 @@
     "@babel/helper-plugin-utils" "^7.8.3"
     "@babel/plugin-syntax-optional-catch-binding" "^7.8.0"
 
+"@babel/plugin-proposal-optional-chaining@^7.10.3":
+  version "7.10.3"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.10.3.tgz#9a726f94622b653c0a3a7a59cdce94730f526f7c"
+  integrity sha512-yyG3n9dJ1vZ6v5sfmIlMMZ8azQoqx/5/nZTSWX1td6L1H1bsjzA8TInDChpafCZiJkeOFzp/PtrfigAQXxI1Ng==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.10.3"
+    "@babel/plugin-syntax-optional-chaining" "^7.8.0"
+
 "@babel/plugin-proposal-optional-chaining@^7.9.0":
   version "7.9.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.9.0.tgz#31db16b154c39d6b8a645292472b98394c292a58"