diff --git a/README.md b/README.md
index d8abbe324a9..25a1a58f3ed 100644
--- a/README.md
+++ b/README.md
@@ -233,7 +233,7 @@ The latest version under the `canary` tag **(latest commit to master)** is:
 
 ## Supported TypeScript Version
 
-**The version range of TypeScript currently supported by this parser is `>=3.3.1 <4.3.0`.**
+**The version range of TypeScript currently supported by this parser is `>=3.3.1 <4.4.0`.**
 
 These versions are what we test against.
 
diff --git a/package.json b/package.json
index 61fff853321..ea5995ab64d 100644
--- a/package.json
+++ b/package.json
@@ -113,9 +113,9 @@
     "ts-jest": "^26.5.1",
     "ts-node": "^9.0.0",
     "tslint": "^6.1.3",
-    "typescript": ">=3.3.1 <4.3.0"
+    "typescript": ">=3.3.1 <4.4.0 || 4.3.1-rc"
   },
   "resolutions": {
-    "typescript": "4.2.2"
+    "typescript": "4.3.1-rc"
   }
 }
diff --git a/packages/eslint-plugin/src/rules/dot-notation.ts b/packages/eslint-plugin/src/rules/dot-notation.ts
index 055b97ecab2..b93dc8d035a 100644
--- a/packages/eslint-plugin/src/rules/dot-notation.ts
+++ b/packages/eslint-plugin/src/rules/dot-notation.ts
@@ -77,6 +77,7 @@ export default createRule<Options, MessageIds>({
       (options.allowIndexSignaturePropertyAccess ?? false) ||
       tsutils.isCompilerOptionEnabled(
         program.getCompilerOptions(),
+        // @ts-expect-error - TS is refining the type to never for some reason
         'noPropertyAccessFromIndexSignature',
       );
 
diff --git a/packages/typescript-estree/package.json b/packages/typescript-estree/package.json
index a350c25ef9d..15e1ec911bc 100644
--- a/packages/typescript-estree/package.json
+++ b/packages/typescript-estree/package.json
@@ -51,8 +51,8 @@
   },
   "devDependencies": {
     "@babel/code-frame": "^7.12.13",
-    "@babel/parser": "^7.13.11",
-    "@babel/types": "^7.13.0",
+    "@babel/parser": "^7.14.3",
+    "@babel/types": "^7.14.2",
     "@types/babel__code-frame": "*",
     "@types/debug": "*",
     "@types/glob": "*",
diff --git a/packages/typescript-estree/src/convert.ts b/packages/typescript-estree/src/convert.ts
index aad29f9b146..3f14454384d 100644
--- a/packages/typescript-estree/src/convert.ts
+++ b/packages/typescript-estree/src/convert.ts
@@ -500,7 +500,7 @@ export class Converter {
     Object.entries<any>(node)
       .filter(
         ([key]) =>
-          !/^(?:_children|kind|parent|pos|end|flags|modifierFlagsCache|jsDoc|type|typeArguments|typeParameters|decorators)$/.test(
+          !/^(?:_children|kind|parent|pos|end|flags|modifierFlagsCache|jsDoc|type|typeArguments|typeParameters|decorators|transformFlags)$/.test(
             key,
           ),
       )
diff --git a/packages/typescript-estree/src/parser.ts b/packages/typescript-estree/src/parser.ts
index 300a73c6f1d..fdbeaa6fa06 100644
--- a/packages/typescript-estree/src/parser.ts
+++ b/packages/typescript-estree/src/parser.ts
@@ -25,12 +25,12 @@ const log = debug('typescript-eslint:typescript-estree:parser');
  * This needs to be kept in sync with the top-level README.md in the
  * typescript-eslint monorepo
  */
-const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <4.3.0';
+const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <4.4.0';
 /*
  * The semver package will ignore prerelease ranges, and we don't want to explicitly document every one
  * List them all separately here, so we can automatically create the full string
  */
-const SUPPORTED_PRERELEASE_RANGES: string[] = ['4.1.1-rc', '4.1.0-beta'];
+const SUPPORTED_PRERELEASE_RANGES: string[] = ['4.3.0-beta', '4.3.1-rc'];
 const ACTIVE_TYPESCRIPT_VERSION = ts.version;
 const isRunningSupportedTypeScriptVersion = semver.satisfies(
   ACTIVE_TYPESCRIPT_VERSION,
diff --git a/packages/typescript-estree/tests/ast-alignment/utils.ts b/packages/typescript-estree/tests/ast-alignment/utils.ts
index 99956cb694f..b0c7c990553 100644
--- a/packages/typescript-estree/tests/ast-alignment/utils.ts
+++ b/packages/typescript-estree/tests/ast-alignment/utils.ts
@@ -126,6 +126,10 @@ export function preprocessBabylonAST(ast: BabelTypes.File): any {
           node.params = node.parameters;
           delete node.parameters;
         }
+        if (node.kind) {
+          // TODO - remove this once we support accessor signatures
+          delete node.kind;
+        }
       },
       /**
        * We want this node to be different
diff --git a/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap b/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap
index 7da28080eb3..ef7abcee4f4 100644
--- a/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap
+++ b/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap
@@ -22,7 +22,6 @@ Object {
       12,
       12,
     ],
-    "transformFlags": 0,
     "type": "TSEndOfFileToken",
   },
   "externalModuleIndicator": undefined,
@@ -170,7 +169,6 @@ Object {
     },
   ],
   "text": "new foo<T>()",
-  "transformFlags": 9,
   "type": "TSSourceFile",
   "typeReferenceDirectives": Array [],
 }
@@ -210,7 +208,6 @@ Object {
           5,
           8,
         ],
-        "transformFlags": 0,
         "type": "TSUnparsedPrologue",
       },
       "nextContainer": undefined,
@@ -219,7 +216,6 @@ Object {
         35,
       ],
       "symbol": undefined,
-      "transformFlags": 1,
       "type": "TSUnparsedPrologue",
       "typeAnnotation": null,
       "typeParameters": null,
@@ -322,7 +318,6 @@ Object {
     18,
   ],
   "symbol": undefined,
-  "transformFlags": 2305,
   "type": "TSClassDeclaration",
   "typeParameters": null,
 }
@@ -363,7 +358,6 @@ Object {
     0,
     12,
   ],
-  "transformFlags": 9,
   "type": "TSNewExpression",
   "typeParameters": Object {
     "loc": Object {
@@ -464,7 +458,6 @@ Object {
     15,
   ],
   "symbol": undefined,
-  "transformFlags": 257,
   "type": "TSClassDeclaration",
   "typeParameters": Object {
     "loc": Object {
diff --git a/packages/typescript-estree/tests/lib/convert.test.ts b/packages/typescript-estree/tests/lib/convert.test.ts
index a95916138d7..b26390b7f75 100644
--- a/packages/typescript-estree/tests/lib/convert.test.ts
+++ b/packages/typescript-estree/tests/lib/convert.test.ts
@@ -19,8 +19,7 @@ describe('convert', () => {
 
     function fakeUnknownKind(node: ts.Node): void {
       ts.forEachChild(node, fakeUnknownKind);
-      // eslint-disable-next-line @typescript-eslint/ban-ts-comment -- intentionally writing to a readonly field
-      // @ts-expect-error
+      // @ts-expect-error -- intentionally writing to a readonly field
       node.kind = ts.SyntaxKind.UnparsedPrologue;
     }
 
diff --git a/packages/typescript-estree/tests/snapshots/jsx/namespace-this-name.src.js.shot b/packages/typescript-estree/tests/snapshots/jsx/namespace-this-name.src.js.shot
index 58e66b804b7..46d67089584 100644
--- a/packages/typescript-estree/tests/snapshots/jsx/namespace-this-name.src.js.shot
+++ b/packages/typescript-estree/tests/snapshots/jsx/namespace-this-name.src.js.shot
@@ -163,7 +163,7 @@ Object {
         1,
         9,
       ],
-      "type": "Keyword",
+      "type": "JSXIdentifier",
       "value": "this:bar",
     },
     Object {
diff --git a/packages/typescript-estree/tests/snapshots/typescript/errorRecovery/enum-with-keywords.src.ts.shot b/packages/typescript-estree/tests/snapshots/typescript/errorRecovery/enum-with-keywords.src.ts.shot
index 2a93eb27f3d..8eb4625590f 100644
--- a/packages/typescript-estree/tests/snapshots/typescript/errorRecovery/enum-with-keywords.src.ts.shot
+++ b/packages/typescript-estree/tests/snapshots/typescript/errorRecovery/enum-with-keywords.src.ts.shot
@@ -50,7 +50,6 @@ Object {
               7,
               14,
             ],
-            "transformFlags": 1,
             "type": "TSPrivateKeyword",
           },
           Object {
@@ -68,7 +67,6 @@ Object {
               15,
               21,
             ],
-            "transformFlags": 1,
             "type": "TSPublicKeyword",
           },
           Object {
@@ -86,7 +84,6 @@ Object {
               22,
               31,
             ],
-            "transformFlags": 1,
             "type": "TSProtectedKeyword",
           },
           Object {
@@ -104,7 +101,6 @@ Object {
               32,
               38,
             ],
-            "transformFlags": 256,
             "type": "TSStaticKeyword",
           },
           Object {
@@ -122,7 +118,6 @@ Object {
               39,
               47,
             ],
-            "transformFlags": 1,
             "type": "TSReadonlyKeyword",
           },
           Object {
@@ -157,7 +152,6 @@ Object {
               57,
               62,
             ],
-            "transformFlags": 96,
             "type": "TSAsyncKeyword",
           },
         ],
diff --git a/yarn.lock b/yarn.lock
index 2d44f73beda..281160f5ca1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -171,11 +171,16 @@
     chalk "^2.0.0"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.1.0", "@babel/parser@^7.12.13", "@babel/parser@^7.13.0", "@babel/parser@^7.13.10", "@babel/parser@^7.13.11":
+"@babel/parser@^7.1.0", "@babel/parser@^7.12.13", "@babel/parser@^7.13.0", "@babel/parser@^7.13.10":
   version "7.13.15"
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.13.15.tgz#8e66775fb523599acb6a289e12929fa5ab0954d8"
   integrity sha512-b9COtcAlVEQljy/9fbcMHpG+UIW9ReF+gpaxDHTlZd0c6/UU9ng8zdySAW9sRTzpvcdCHn6bUcbuYUgGzLAWVQ==
 
+"@babel/parser@^7.14.3":
+  version "7.14.3"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.3.tgz#9b530eecb071fd0c93519df25c5ff9f14759f298"
+  integrity sha512-7MpZDIfI7sUC5zWo2+foJ50CSI5lcqDehZ0lVgIhSi4bFEk94fLAKlF3Q0nzSQQ+ca0lm+O6G9ztKVBeu8PMRQ==
+
 "@babel/plugin-syntax-async-generators@^7.8.4":
   version "7.8.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-async-generators/-/plugin-syntax-async-generators-7.8.4.tgz#a983fb1aeb2ec3f6ed042a210f640e90e786fe0d"
@@ -291,7 +296,7 @@
     globals "^11.1.0"
     lodash "^4.17.19"
 
-"@babel/types@^7.0.0", "@babel/types@^7.12.13", "@babel/types@^7.13.0", "@babel/types@^7.3.0", "@babel/types@^7.3.3":
+"@babel/types@^7.0.0", "@babel/types@^7.12.13", "@babel/types@^7.13.0", "@babel/types@^7.14.2", "@babel/types@^7.3.0", "@babel/types@^7.3.3":
   version "7.14.2"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.14.2.tgz#4208ae003107ef8a057ea8333e56eb64d2f6a2c3"
   integrity sha512-SdjAG/3DikRHpUOjxZgnkbR11xUlyDMUFJdvnIgZEE16mqmY0BINMmc4//JMJglEmn6i7sq6p+mGrFWyZ98EEw==
@@ -8858,10 +8863,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@*, typescript@4.2.2, "typescript@>=3.3.1 <4.3.0", typescript@^4.1.0-dev.20201026, typescript@~4.2.4:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.2.tgz#1450f020618f872db0ea17317d16d8da8ddb8c4c"
-  integrity sha512-tbb+NVrLfnsJy3M59lsDgrzWIflR4d4TIUjz+heUnHZwdF7YsrMTKoRERiIvI2lvBG95dfpLxB21WZhys1bgaQ==
+typescript@*, typescript@4.3.1-rc, "typescript@>=3.3.1 <4.4.0 || 4.3.1-rc", typescript@^4.1.0-dev.20201026, typescript@~4.2.4:
+  version "4.3.1-rc"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.1-rc.tgz#925149c8d8514e20a6bd8d4bd7f42adac67ab59c"
+  integrity sha512-L3uJ0gcntaRaKni9aV2amYB+pCDVodKe/B5+IREyvtKGsDOF7cYjchHb/B894skqkgD52ykRuWatIZMqEsHIqA==
 
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.6"