diff --git a/package.json b/package.json
index d59649a..ed2f6c4 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "into-stream": "^2.0.0",
     "nyc": "^3.2.2",
     "pem": "^1.4.4",
-    "pify": "^2.2.0",
+    "pify": "^2.3.0",
     "tempfile": "^1.1.1",
     "xo": "*"
   },
diff --git a/test/https.js b/test/https.js
index ce03957..87772fa 100644
--- a/test/https.js
+++ b/test/https.js
@@ -10,15 +10,15 @@ let cert;
 let caRootKey;
 let caRootCert;
 
-let pemify = pify.all(pem);
+const pemP = pify(pem);
 
 test.before('setup', async t => {
-	const caKeys = await pemify.createCertificate({days: 1, selfSigned: true});
+	const caKeys = await pemP.createCertificate({days: 1, selfSigned: true});
 
 	caRootKey = caKeys.serviceKey;
 	caRootCert = caKeys.certificate;
 
-	const keys = await pemify.createCertificate({
+	const keys = await pemP.createCertificate({
 		serviceCertificate: caRootCert,
 		serviceKey: caRootKey,
 		serial: Date.now(),