diff --git a/types/hdkey/hdkey-tests.ts b/types/hdkey/hdkey-tests.ts
new file mode 100644
index 0000000000..eda1e9e995
--- /dev/null
+++ b/types/hdkey/hdkey-tests.ts
@@ -0,0 +1,6 @@
+import HDKey = require('hdkey');
+const hdKey = new HDKey();
+hdKey.derive('m/1/42');
+hdKey.privateKey;
+hdKey.publicKey;
+hdKey.chainCode;
diff --git a/types/hdkey/index.d.ts b/types/hdkey/index.d.ts
new file mode 100644
index 0000000000..3cf798c15b
--- /dev/null
+++ b/types/hdkey/index.d.ts
@@ -0,0 +1,16 @@
+// Type definitions for hdkey 0.7
+// Project: https://github.com/cryptocoinjs/hdkey
+// Definitions by: Leonid Logvinov <https://github.com/LogvinovLeon>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node"/>
+
+declare class HDNode {
+    static fromMasterSeed(seed: Buffer): HDNode;
+    publicKey: Buffer;
+    privateKey: Buffer;
+    chainCode: Buffer;
+    constructor();
+    derive(path: string): HDNode;
+}
+export = HDNode;
diff --git a/types/hdkey/tsconfig.json b/types/hdkey/tsconfig.json
new file mode 100644
index 0000000000..f078912fe8
--- /dev/null
+++ b/types/hdkey/tsconfig.json
@@ -0,0 +1,16 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": ["es6"],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": ["../"],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": ["index.d.ts", "hdkey-tests.ts"]
+}
diff --git a/types/hdkey/tslint.json b/types/hdkey/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/hdkey/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }