diff --git a/packages/header-parser/test/index.test.ts b/packages/header-parser/test/index.test.ts
index 25bac7f6..dcb68d75 100644
--- a/packages/header-parser/test/index.test.ts
+++ b/packages/header-parser/test/index.test.ts
@@ -40,7 +40,7 @@ describe("parse", () => {
       libraryName: "foo",
       libraryMajorVersion: 1,
       libraryMinorVersion: 2,
-      typeScriptVersion: "4.3",
+      typeScriptVersion: "4.4",
       nonNpm: false,
       projects: ["https://github.com/foo/foo", "https://foo.com"],
       contributors: [
@@ -65,7 +65,7 @@ describe("parse", () => {
       libraryName: "foo",
       libraryMajorVersion: 1,
       libraryMinorVersion: 2,
-      typeScriptVersion: "4.3",
+      typeScriptVersion: "4.4",
       nonNpm: false,
       projects: ["https://github.com/foo/foo", "https://foo.com"],
       contributors: [
@@ -147,11 +147,11 @@ describe("isSupported", () => {
   it("works", () => {
     expect(TypeScriptVersion.isSupported("4.5")).toBeTruthy();
   });
-  it("supports 4.3", () => {
-    expect(TypeScriptVersion.isSupported("4.3")).toBeTruthy();
+  it("supports 4.4", () => {
+    expect(TypeScriptVersion.isSupported("4.4")).toBeTruthy();
   });
-  it("does not support 4.2", () => {
-    expect(!TypeScriptVersion.isSupported("4.2")).toBeTruthy();
+  it("does not support 4.3", () => {
+    expect(!TypeScriptVersion.isSupported("4.3")).toBeTruthy();
   });
 });
 
@@ -180,8 +180,8 @@ describe("tagsToUpdate", () => {
   it("works", () => {
     expect(TypeScriptVersion.tagsToUpdate("5.0")).toEqual(["ts5.0", "ts5.1", "ts5.2", "latest"]);
   });
-  it("allows 4.2 onwards", () => {
-    expect(TypeScriptVersion.tagsToUpdate("4.3")).toEqual(
+  it("allows 4.4 onwards", () => {
+    expect(TypeScriptVersion.tagsToUpdate("4.4")).toEqual(
       TypeScriptVersion.supported.map((s) => "ts" + s).concat("latest")
     );
   });
diff --git a/packages/publisher/test/generate-packages.test.ts b/packages/publisher/test/generate-packages.test.ts
index 6f5a411b..84c934ec 100644
--- a/packages/publisher/test/generate-packages.test.ts
+++ b/packages/publisher/test/generate-packages.test.ts
@@ -143,7 +143,7 @@ testo({
         "balzac": "~3"
     },
     "typesPublisherContentHash": "11",
-    "typeScriptVersion": "4.3"
+    "typeScriptVersion": "4.4"
 }`);
   },
   basicNotNeededPackageJson() {
diff --git a/packages/typescript-versions/src/index.ts b/packages/typescript-versions/src/index.ts
index 434204b3..2ff76331 100644
--- a/packages/typescript-versions/src/index.ts
+++ b/packages/typescript-versions/src/index.ts
@@ -51,20 +51,21 @@ export type UnsupportedTypeScriptVersion =
   | "3.9"
   | "4.0"
   | "4.1"
-  | "4.2";
+  | "4.2"
+  | "4.3";
 /**
  * Parseable and supported TypeScript versions.
  * Only add to this list if we will support this version on Definitely Typed.
  */
-export type TypeScriptVersion = "4.3" | "4.4" | "4.5" | "4.6" | "4.7" | "4.8" | "4.9" | "5.0" | "5.1" | "5.2";
+export type TypeScriptVersion = "4.4" | "4.5" | "4.6" | "4.7" | "4.8" | "4.9" | "5.0" | "5.1" | "5.2";
 
 export type AllTypeScriptVersion = UnsupportedTypeScriptVersion | TypeScriptVersion;
 
 export namespace TypeScriptVersion {
   /** Add to this list when a version actually ships.  */
-  export const shipped: readonly TypeScriptVersion[] = ["4.3", "4.4", "4.5", "4.6", "4.7", "4.8", "4.9", "5.0"];
+  export const shipped: readonly TypeScriptVersion[] = ["4.4", "4.5", "4.6", "4.7", "4.8", "4.9", "5.0", "5.1"];
   /** Add to this list when a version is available as typescript@next */
-  export const supported: readonly TypeScriptVersion[] = [...shipped, "5.1", "5.2"];
+  export const supported: readonly TypeScriptVersion[] = [...shipped, "5.2"];
   /** Add to this list when it will no longer be supported on Definitely Typed */
   export const unsupported: readonly UnsupportedTypeScriptVersion[] = [
     "2.0",
@@ -90,6 +91,7 @@ export namespace TypeScriptVersion {
     "4.0",
     "4.1",
     "4.2",
+    "4.3",
   ];
   export const all: readonly AllTypeScriptVersion[] = [...unsupported, ...supported];
   export const lowest = supported[0];