diff --git a/README.md b/README.md
index 0d4cf33..058dd17 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ async function main() {
         [Promise.resolve("ab"), delay("cd", 1000)], 
         c => c.length === 2
     ); // true (after another second)
-     await every(
+    await every(
         [Promise.resolve("ab"), delay("cd", 1000)], 
         c => c.length === 1
     ); // false (instantly)
diff --git a/package.json b/package.json
index 455b957..c413abc 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
         "@types/node": "^10.12.10",
         "ava": "^1.0.0-rc.2",
         "chai": "^4.2.0",
-        "mysah": "0.2",
+        "mysah": "^0.3.5",
         "prettier": "^1.14.3",
         "ts-node": "^7.0.1",
         "tslint": "^5.11.0",
diff --git a/yarn.lock b/yarn.lock
index a156d58..82b9bd2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1142,18 +1142,6 @@ es6-error@^4.0.1:
   resolved "https://registry.yarnpkg.com/es6-error/-/es6-error-4.1.1.tgz#9e3af407459deed47e9a91f9b885a84eb05c561d"
   integrity sha512-Um/+FxMr9CISWh0bi5Zv0iOD+4cFh5qLeks1qhAopKVAJw3drgKbKySikp7wGhDL0HPeaja0P5ULZrxLkniUVg==
 
-es6-promise@^4.0.3:
-  version "4.2.5"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.5.tgz#da6d0d5692efb461e082c14817fe2427d8f5d054"
-  integrity sha512-n6wvpdE43VFtJq+lUDYDBFUwV8TZbuGXLV4D6wKafg13ldznKsyEvatubnmUe31zcvelSzOHF+XbaT+Bl9ObDg==
-
-es6-promisify@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/es6-promisify/-/es6-promisify-5.0.0.tgz#5109d62f3e56ea967c4b63505aef08291c8a5203"
-  integrity sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=
-  dependencies:
-    es6-promise "^4.0.3"
-
 escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.4, escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
@@ -2170,12 +2158,10 @@ multimatch@^2.1.0:
     arrify "^1.0.0"
     minimatch "^3.0.0"
 
-mysah@0.2:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/mysah/-/mysah-0.2.0.tgz#77bcaaa25829bf874ac40ee5c47069bcf52e7283"
-  integrity sha1-d7yqolgpv4dKxA7lxHBpvPUucoM=
-  dependencies:
-    es6-promisify "^5.0.0"
+mysah@^0.3.5:
+  version "0.3.5"
+  resolved "https://registry.yarnpkg.com/mysah/-/mysah-0.3.5.tgz#79305e1834db166d1daa02dac93072adaa63d6c2"
+  integrity sha512-Fz31nflyS0G2uwKlunpnKU+M9HUPxK89IWYjsNL3ENgunMlMOq1ELtpGGiTSLrbVV/N5Mc9j51kvraEbdPKgzQ==
 
 nan@^2.9.2:
   version "2.11.1"