diff --git a/types/ajv-keywords/ajv-keywords-tests.ts b/types/ajv-keywords/ajv-keywords-tests.ts
new file mode 100644
index 0000000000..2e2a984302
--- /dev/null
+++ b/types/ajv-keywords/ajv-keywords-tests.ts
@@ -0,0 +1,5 @@
+import Ajv from 'ajv';
+import defineKeywords = require('ajv-keywords');
+
+let ajv = new Ajv();
+ajv = defineKeywords(ajv);
diff --git a/types/ajv-keywords/index.d.ts b/types/ajv-keywords/index.d.ts
new file mode 100644
index 0000000000..4a79780fd9
--- /dev/null
+++ b/types/ajv-keywords/index.d.ts
@@ -0,0 +1,19 @@
+// Type definitions for ajv-keywords 3.4
+// Project: https://github.com/epoberezkin/ajv-keywords#readme
+// Definitions by: Eric Gonzalez <https://github.com/lochiego>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.7
+
+import { Ajv } from "ajv";
+
+export { };
+
+/**
+ * Defines one or several keywords in ajv instance
+ * @param  ajv validator instance
+ * @param  keywords keyword(s) to define
+ * @return ajv instance (for chaining)
+ */
+declare function defineKeywords(ajv: Ajv, keywords?: string | ReadonlyArray<string>): Ajv;
+
+export = defineKeywords;
diff --git a/types/ajv-keywords/package.json b/types/ajv-keywords/package.json
new file mode 100644
index 0000000000..61a2ab2af5
--- /dev/null
+++ b/types/ajv-keywords/package.json
@@ -0,0 +1,6 @@
+{
+    "private": true,
+    "dependencies": {
+        "ajv": "^6.9.1"
+    }
+}
diff --git a/types/ajv-keywords/tsconfig.json b/types/ajv-keywords/tsconfig.json
new file mode 100644
index 0000000000..e97a410185
--- /dev/null
+++ b/types/ajv-keywords/tsconfig.json
@@ -0,0 +1,24 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true,
+        "esModuleInterop": true
+    },
+    "files": [
+        "index.d.ts",
+        "ajv-keywords-tests.ts"
+    ]
+}
diff --git a/types/ajv-keywords/tslint.json b/types/ajv-keywords/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/ajv-keywords/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }