diff --git a/types/gulp-sequence/gulp-sequence-tests.ts b/types/gulp-sequence/gulp-sequence-tests.ts
new file mode 100644
index 0000000000..f2c10418c8
--- /dev/null
+++ b/types/gulp-sequence/gulp-sequence-tests.ts
@@ -0,0 +1,70 @@
+import * as seq from 'gulp-sequence';
+import * as gulp from 'gulp';
+
+seq.use(gulp).use(gulp).use(gulp);
+
+gulp.task('x', seq('foo'));
+gulp.task('x', seq('foo', ['foo', 'bar'], 'qux'));
+gulp.task('x', seq(
+    '1',
+    '2',
+    '3',
+    '4',
+    '5',
+    '6',
+    '7',
+    '8',
+    '9',
+    '10',
+    '11',
+    '12',
+    '13',
+    '14',
+    '15',
+    '16',
+    '17',
+    '18',
+    '19',
+    '20',
+    '21',
+    '22',
+    '23',
+    '24',
+    '25'
+));
+
+const noop = () => {};
+
+// tslint:disable-next-line:no-void-expression
+let r: undefined = <undefined> seq('foo', noop);
+// tslint:disable-next-line:no-void-expression
+r = <undefined> seq('foo', ['foo', 'bar'], 'qux', noop);
+// tslint:disable-next-line:no-void-expression
+r = <undefined> seq(
+    '1',
+    '2',
+    '3',
+    '4',
+    '5',
+    '6',
+    '7',
+    '8',
+    '9',
+    '10',
+    '11',
+    '12',
+    '13',
+    '14',
+    '15',
+    '16',
+    '17',
+    '18',
+    '19',
+    '20',
+    '21',
+    '22',
+    '23',
+    '24',
+    '25',
+    noop
+);
diff --git a/types/gulp-sequence/index.d.ts b/types/gulp-sequence/index.d.ts
new file mode 100644
index 0000000000..aa236e3a5a
--- /dev/null
+++ b/types/gulp-sequence/index.d.ts
@@ -0,0 +1,391 @@
+// Type definitions for gulp-sequence 1.0
+// Project: https://github.com/teambition/gulp-sequence
+// Definitions by: Alorel <https://github.com/Alorel>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { Gulp, TaskFunction } from 'gulp';
+
+declare namespace seq {
+    type Step = string | string[];
+
+    type Done = (error?: any) => void;
+
+    function use(gulp: Gulp): typeof seq;
+}
+
+/*
+Sequence functions (apart from the one returning TaskFunction) generated using the following (requires lodash for the padding):
+
+const fnBase = `declare function seq(`;
+const argPad = _.pad('', fnBase.length, ' ');
+const maxArgs = 25;
+
+const outDone = [];
+
+for (let i = 1; i <= maxArgs; i++) {
+	let def = [];
+  for (let j = 1; j <= i; j++) {
+  	def.push(`s${j}: seq.Step`);
+  }
+
+  def.push(`done: seq.Done): void;`);
+  outDone.push(def.join(`,\n${argPad}`));
+}
+
+console.log(fnBase + outDone.join(`\n${fnBase}`));
+*/
+
+declare function seq(firstTask: seq.Step, ...additionalTasks: seq.Step[]): TaskFunction;
+
+declare function seq(s1: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     s21: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     s21: seq.Step,
+                     s22: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     s21: seq.Step,
+                     s22: seq.Step,
+                     s23: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     s21: seq.Step,
+                     s22: seq.Step,
+                     s23: seq.Step,
+                     s24: seq.Step,
+                     done: seq.Done): void;
+declare function seq(s1: seq.Step,
+                     s2: seq.Step,
+                     s3: seq.Step,
+                     s4: seq.Step,
+                     s5: seq.Step,
+                     s6: seq.Step,
+                     s7: seq.Step,
+                     s8: seq.Step,
+                     s9: seq.Step,
+                     s10: seq.Step,
+                     s11: seq.Step,
+                     s12: seq.Step,
+                     s13: seq.Step,
+                     s14: seq.Step,
+                     s15: seq.Step,
+                     s16: seq.Step,
+                     s17: seq.Step,
+                     s18: seq.Step,
+                     s19: seq.Step,
+                     s20: seq.Step,
+                     s21: seq.Step,
+                     s22: seq.Step,
+                     s23: seq.Step,
+                     s24: seq.Step,
+                     s25: seq.Step,
+                     done: seq.Done): void;
+
+export = seq;
diff --git a/types/gulp-sequence/tsconfig.json b/types/gulp-sequence/tsconfig.json
new file mode 100644
index 0000000000..cdfaf33610
--- /dev/null
+++ b/types/gulp-sequence/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "gulp-sequence-tests.ts"
+    ]
+}
diff --git a/types/gulp-sequence/tslint.json b/types/gulp-sequence/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/gulp-sequence/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }