diff --git a/lib/deflate.js b/lib/deflate.js
index 88b64ce..9c6b88a 100644
--- a/lib/deflate.js
+++ b/lib/deflate.js
@@ -301,7 +301,7 @@ Deflate.prototype.onEnd = function (status) {
 
 /**
  * deflate(data[, options]) -> Uint8Array
- * - data (Uint8Array|String): input data to compress.
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
  * - options (Object): zlib deflate options.
  *
  * Compress `data` with deflate algorithm and `options`.
@@ -345,7 +345,7 @@ function deflate(input, options) {
 
 /**
  * deflateRaw(data[, options]) -> Uint8Array
- * - data (Uint8Array|String): input data to compress.
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
  * - options (Object): zlib deflate options.
  *
  * The same as [[deflate]], but creates raw data, without wrapper
@@ -360,7 +360,7 @@ function deflateRaw(input, options) {
 
 /**
  * gzip(data[, options]) -> Uint8Array
- * - data (Uint8Array|String): input data to compress.
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
  * - options (Object): zlib deflate options.
  *
  * The same as [[deflate]], but create gzip wrapper instead of
diff --git a/lib/inflate.js b/lib/inflate.js
index d95bf14..96c9fb5 100644
--- a/lib/inflate.js
+++ b/lib/inflate.js
@@ -338,7 +338,7 @@ Inflate.prototype.onEnd = function (status) {
 
 /**
  * inflate(data[, options]) -> Uint8Array|String
- * - data (Uint8Array): input data to decompress.
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
  * - options (Object): zlib inflate options.
  *
  * Decompress `data` with inflate/ungzip and `options`. Autodetect
@@ -389,7 +389,7 @@ function inflate(input, options) {
 
 /**
  * inflateRaw(data[, options]) -> Uint8Array|String
- * - data (Uint8Array): input data to decompress.
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
  * - options (Object): zlib inflate options.
  *
  * The same as [[inflate]], but creates raw data, without wrapper
@@ -404,7 +404,7 @@ function inflateRaw(input, options) {
 
 /**
  * ungzip(data[, options]) -> Uint8Array|String
- * - data (Uint8Array): input data to decompress.
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
  * - options (Object): zlib inflate options.
  *
  * Just shortcut to [[inflate]], because it autodetects format