diff --git a/CHANGELOG.md b/CHANGELOG.md
index 161fa97b91ac3d..70ec7c9b6e53be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 ### [Versions](https://material-ui.com/versions/)
 
+## 3.9.4
+###### *Nov 28, 2019*
+
+### `@material-ui/core@v3.9.4`
+
+- [Portal] Fix circular PortalProps Types (#18602)
+
+Fix TypeScript 3.7 support
+
 ## 3.9.3
 ###### *Mar 28, 2019*
 
diff --git a/package.json b/package.json
index f2ee87f7a418ea..03471d7e04ec5c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "@material-ui/workspace",
   "private": true,
   "author": "Material-UI Team",
-  "version": "3.9.3",
+  "version": "3.9.4",
   "description": "Material-UI's workspace package",
   "keywords": [
     "react",
diff --git a/packages/material-ui/.size-snapshot.json b/packages/material-ui/.size-snapshot.json
index 4a1a1a4958869a..921f67acd3ab7d 100644
--- a/packages/material-ui/.size-snapshot.json
+++ b/packages/material-ui/.size-snapshot.json
@@ -1,6 +1,6 @@
 {
   "build/umd/material-ui.production.min.js": {
-    "bundled": 869474,
+    "bundled": 869451,
     "minified": 321116,
     "gzipped": 84884
   }
diff --git a/packages/material-ui/package.json b/packages/material-ui/package.json
index 7509ad5bd99301..a71b1a90918bf2 100644
--- a/packages/material-ui/package.json
+++ b/packages/material-ui/package.json
@@ -2,7 +2,7 @@
   "name": "@material-ui/core",
   "private": false,
   "author": "Material-UI Team",
-  "version": "3.9.3",
+  "version": "3.9.4",
   "description": "React components that implement Google's Material Design.",
   "keywords": [
     "react",