diff --git a/types/i18next/index.d.ts b/types/i18next/index.d.ts
index 958bff12a6..0eb8d64859 100644
--- a/types/i18next/index.d.ts
+++ b/types/i18next/index.d.ts
@@ -49,6 +49,8 @@ declare namespace i18n {
         joinArrays?: string;
         postProcess?: string | any[];
         interpolation?: InterpolationOptions;
+        //add an indexer to assure that interpolation arguments can be passed
+        [x: string]: any;
     }
 
     interface Options {
@@ -106,7 +108,7 @@ declare namespace i18n {
 
         t(key: string, options?: TranslationOptions): string | any | Array<any>;
 
-        exists(): boolean;
+        exists(key, options?: TranslationOptions): boolean;
 
         setDefaultNamespace(ns: string): void;
 
diff --git a/types/qhistory/index.d.ts b/types/qhistory/index.d.ts
new file mode 100644
index 0000000000..301f6b4391
--- /dev/null
+++ b/types/qhistory/index.d.ts
@@ -0,0 +1,30 @@
+// Type definitions for qhistory 1.0
+// Project: https://github.com/pshrmn/qhistory#readme
+// Definitions by: Diogo Franco <https://github.com/Kovensky>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+export as namespace qhistory;
+
+import { History } from 'history';
+
+// augments the 'history' types when used
+declare module 'history' {
+    interface Location {
+        // actually a complicated nested object/array system, but giving it a type
+        // makes _actually_ using it (or even casting to a known structure) much harder.
+        query: any;
+    }
+
+    interface LocationDescriptorObject {
+        query?: object;
+    }
+}
+
+declare function qhistory(
+    history: History,
+    stringify: (query: object) => string,
+    parse: (search: string) => object
+): History;
+
+export default qhistory;
diff --git a/types/qhistory/qhistory-tests.ts b/types/qhistory/qhistory-tests.ts
new file mode 100644
index 0000000000..778e540beb
--- /dev/null
+++ b/types/qhistory/qhistory-tests.ts
@@ -0,0 +1,19 @@
+import qhistory from 'qhistory';
+import { createBrowserHistory } from 'history';
+import * as qs from 'qs';
+
+const history = qhistory(createBrowserHistory(), qs.stringify, qs.parse);
+
+history.listen(location => {
+  const query: { foo?: string } = location.query;
+  if (query.foo) {
+    const foo: string = query.foo;
+  }
+});
+
+history.push({
+  pathname: '/',
+  query: {
+    foo: 'bar'
+  }
+});
diff --git a/types/qhistory/tsconfig.json b/types/qhistory/tsconfig.json
new file mode 100644
index 0000000000..e559937ec7
--- /dev/null
+++ b/types/qhistory/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "dom",
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "qhistory-tests.ts"
+    ]
+}
diff --git a/types/qhistory/tslint.json b/types/qhistory/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/qhistory/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }