diff --git a/docs/package-lock.json b/docs/package-lock.json
index d1d913e06..76a078b44 100644
--- a/docs/package-lock.json
+++ b/docs/package-lock.json
@@ -7430,9 +7430,9 @@
       "dev": true
     },
     "immutable": {
-      "version": "4.0.0-rc.9",
-      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.0.0-rc.9.tgz",
-      "integrity": "sha1-Hm4AlOZJAT7DdC0rWu7KXu2k8L8="
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.0.0.tgz",
+      "integrity": "sha512-zIE9hX70qew5qTUjSS7wi1iwj/l7+m54KWU247nhM3v806UdGj1yDndXj+IOYxxtW9zyLI+xqFNZjTuDaLUqFw=="
     },
     "import-cwd": {
       "version": "2.1.0",
diff --git a/docs/package.json b/docs/package.json
index 863cd928b..606656dfe 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -60,7 +60,7 @@
     "classnames": "^2.2.6",
     "codemirror": "^5.49.2",
     "fsevents": "^2.2.1",
-    "immutable": "^4.0.0-rc.1",
+    "immutable": "^4.0.0",
     "react": "^16.12.0",
     "react-codemirror": "^1.0.0",
     "react-color": "^2.17.3",