diff --git a/README.md b/README.md
index a7989ef..259fa0d 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,8 @@ Data type | String
 `Uint8Array` | "uint8"
 `Uint16Array` | "uint16"
 `Uint32Array` | "uint32"
+`BigInt64Array` | "bigint64"
+`BigUint64Array` | "biguint64"
 `Float32Array` | "float32"
 `Float64Array` | "float64"
 `Array` | "array"
diff --git a/ndarray.js b/ndarray.js
index f50d99e..43c9b5a 100644
--- a/ndarray.js
+++ b/ndarray.js
@@ -276,6 +276,10 @@ function arrayDType(data) {
         return "uint32"
       case "[object Uint8ClampedArray]":
         return "uint8_clamped"
+      case "[object BigInt64Array]":
+        return "bigint64"
+      case "[object BigUint64Array]":
+        return "biguint64"
     }
   }
   if(Array.isArray(data)) {
@@ -295,6 +299,8 @@ var CACHED_CONSTRUCTORS = {
   "uint32":[],
   "array":[],
   "uint8_clamped":[],
+  "bigint64": [],
+  "biguint64": [],
   "buffer":[],
   "generic":[]
 }
diff --git a/package.json b/package.json
index e570f4a..bbfb670 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ndarray",
-  "version": "1.0.18",
+  "version": "1.0.19",
   "description": "Multidimensional Arrays",
   "main": "ndarray.js",
   "directories": {
diff --git a/test/test.js b/test/test.js
index 92ed2de..7c79eb9 100644
--- a/test/test.js
+++ b/test/test.js
@@ -63,6 +63,17 @@ test("uint8clamped", function(t) {
   t.end()
 })
 
+if((typeof BigInt64Array) !== "undefined")
+test("bigint64", function(t) {
+  var p = ndarray(new BigInt64Array([1,2,3,4].map(BigInt)), [4])
+  t.equals(p.dtype, "bigint64")
+  t.equals(p.get(0), BigInt(1))
+  t.equals(p.get(1), BigInt(2))
+  t.equals(p.get(2), BigInt(3))
+  t.equals(p.get(3), BigInt(4))
+  t.end()
+})
+
 test("buffer", function(t) {
   var p = ndarray(new Buffer(5))
   t.equals(p.dtype, "buffer")