diff --git a/node.js b/node.js
index 8ecfa5d..67189a3 100644
--- a/node.js
+++ b/node.js
@@ -315,8 +315,8 @@ ACME._testChallenges = function (me, options) {
       ));
     }
     if ('dns-01' === challenge.type) {
-      // nameservers take a second to propagate
-      CHECK_DELAY = 5 * 1000;
+      // Give the nameservers a moment to propagate
+      CHECK_DELAY = 1.5 * 1000;
     }
 
     return Promise.resolve().then(function () {
diff --git a/package.json b/package.json
index cdc69d0..c5431f2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "acme-v2",
-  "version": "1.7.2",
+  "version": "1.7.3",
   "description": "Free SSL. A framework for building Let's Encrypt v2 clients, and other ACME v2 (draft 11) clients. Successor to le-acme-core.js",
   "homepage": "https://git.coolaj86.com/coolaj86/acme-v2.js",
   "main": "node.js",