diff --git a/package.json b/package.json
index 32e360c..3c6c06d 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
   "devDependencies": {
     "blanket": "~1.2.3",
     "chai": "^2.3.0",
-    "chai-as-promised": "^7.1.2",
+    "chai-as-promised": "^8.0.2",
     "coffee-script": "^1.12.7",
     "mocha": "^2.5.3",
     "moment": "^2.30.1",
diff --git a/yarn.lock b/yarn.lock
index 276c550..8e14800 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -49,12 +49,12 @@ buffer-shims@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/buffer-shims/-/buffer-shims-1.0.0.tgz#9978ce317388c649ad8793028c3477ef044a8b51"
 
-chai-as-promised@^7.1.2:
-  version "7.1.2"
-  resolved "https://registry.npmjs.org/chai-as-promised/-/chai-as-promised-7.1.2.tgz#70cd73b74afd519754161386421fb71832c6d041"
-  integrity sha512-aBDHZxRzYnUYuIAIPBH2s511DjlKPzXNlXSGFC8CwmroWQLfrW0LtE1nK3MAwwNhJPa9raEjNCmRoFpG0Hurdw==
+chai-as-promised@^8.0.2:
+  version "8.0.2"
+  resolved "https://registry.npmjs.org/chai-as-promised/-/chai-as-promised-8.0.2.tgz#cd9b77afaa976383eb4cbef9463ac5230f7a1cba"
+  integrity sha512-1GadL+sEJVLzDjcawPM4kjfnL+p/9vrxiEUonowKOAzvVg0PixJUdtuDzdkDeQhK3zfOE76GqGkZIQ7/Adcrqw==
   dependencies:
-    check-error "^1.0.2"
+    check-error "^2.1.1"
 
 chai@^2.3.0:
   version "2.3.0"
@@ -69,9 +69,10 @@ chance@^1.1.8:
   resolved "https://registry.npmjs.org/chance/-/chance-1.1.8.tgz#5d6c2b78c9170bf6eb9df7acdda04363085be909"
   integrity sha512-v7fi5Hj2VbR6dJEGRWLmJBA83LJMS47pkAbmROFxHWd9qmE1esHRZW8Clf1Fhzr3rjxnNZVCjOEv/ivFxeIMtg==
 
-check-error@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
+check-error@^2.1.1:
+  version "2.1.3"
+  resolved "https://registry.npmjs.org/check-error/-/check-error-2.1.3.tgz#2427361117b70cca8dc89680ead32b157019caf5"
+  integrity sha512-PAJdDJusoxnwm1VwW07VWwUN1sl7smmC3OKggvndJFadxxDRyFJBX/ggnu/KE4kQAB7a3Dp8f/YXC1FlUprWmA==
 
 coffee-script@^1.12.7:
   version "1.12.7"