diff --git a/package.json b/package.json
index 13f6812cef..6d4169196e 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,7 @@
   },
   "devDependencies": {
     "@types/node": "^8.0.4",
-    "ava": "^0.22.0",
+    "ava": "^0.23.0",
     "coveralls": "^2.11.16",
     "eslint": "^4.1.1",
     "eslint-config-finn": "^3.0.0",
diff --git a/yarn.lock b/yarn.lock
index e483bc5a05..bd1cf1f26d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -315,9 +315,9 @@ ava-init@^0.2.0:
     read-pkg-up "^2.0.0"
     write-pkg "^3.1.0"
 
-ava@^0.22.0:
-  version "0.22.0"
-  resolved "https://registry.yarnpkg.com/ava/-/ava-0.22.0.tgz#4c28a1fdef7e749ba0c8131ac18a7ca489eef049"
+ava@^0.23.0:
+  version "0.23.0"
+  resolved "https://registry.yarnpkg.com/ava/-/ava-0.23.0.tgz#beed11730adef74a857761b62b8882bf16d5a038"
   dependencies:
     "@ava/babel-preset-stage-4" "^1.1.0"
     "@ava/babel-preset-transform-test-files" "^3.0.0"
@@ -348,7 +348,7 @@ ava@^0.22.0:
     convert-source-map "^1.2.0"
     core-assert "^0.2.0"
     currently-unhandled "^0.4.1"
-    debug "^2.2.0"
+    debug "^3.0.1"
     dot-prop "^4.1.0"
     empower-core "^0.6.1"
     equal-length "^1.0.0"
@@ -385,20 +385,20 @@ ava@^0.22.0:
     package-hash "^2.0.0"
     pkg-conf "^2.0.0"
     plur "^2.0.0"
-    pretty-ms "^2.0.0"
+    pretty-ms "^3.0.0"
     require-precompiled "^0.1.0"
     resolve-cwd "^2.0.0"
     safe-buffer "^5.1.1"
     slash "^1.0.0"
     source-map-support "^0.4.0"
-    stack-utils "^1.0.0"
+    stack-utils "^1.0.1"
     strip-ansi "^4.0.0"
     strip-bom-buf "^1.0.0"
     supports-color "^4.0.0"
     time-require "^0.1.2"
     trim-off-newlines "^1.0.1"
     unique-temp-dir "^1.0.0"
-    update-notifier "^2.1.0"
+    update-notifier "^2.3.0"
 
 aws-sign2@~0.6.0:
   version "0.6.0"
@@ -2444,7 +2444,7 @@ is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
 
-is-finite@^1.0.0, is-finite@^1.0.1:
+is-finite@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
   dependencies:
@@ -3734,11 +3734,7 @@ pkginfo@0.x.x, pkginfo@^0.4.0, pkginfo@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/pkginfo/-/pkginfo-0.4.1.tgz#b5418ef0439de5425fc4995042dced14fb2a84ff"
 
-plur@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/plur/-/plur-1.0.0.tgz#db85c6814f5e5e5a3b49efc28d604fec62975156"
-
-plur@^2.0.0:
+plur@^2.0.0, plur@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/plur/-/plur-2.1.2.tgz#7482452c1a0f508e3e344eaec312c91c29dc655a"
   dependencies:
@@ -3795,13 +3791,12 @@ pretty-ms@^0.2.1:
   dependencies:
     parse-ms "^0.1.0"
 
-pretty-ms@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/pretty-ms/-/pretty-ms-2.1.0.tgz#4257c256df3fb0b451d6affaab021884126981dc"
+pretty-ms@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/pretty-ms/-/pretty-ms-3.0.1.tgz#7c18b73c228a9b8f6edc2835a12cb8f7ed85f9f4"
   dependencies:
-    is-finite "^1.0.1"
     parse-ms "^1.0.0"
-    plur "^1.0.0"
+    plur "^2.1.2"
 
 private@^0.1.7:
   version "0.1.8"
@@ -4569,7 +4564,7 @@ stack-trace@0.0.x:
   version "0.0.10"
   resolved "https://registry.yarnpkg.com/stack-trace/-/stack-trace-0.0.10.tgz#547c70b347e8d32b4e108ea1a2a159e5fdde19c0"
 
-stack-utils@^1.0.0:
+stack-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
 
@@ -4980,7 +4975,7 @@ unzip-response@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/unzip-response/-/unzip-response-2.0.1.tgz#d2f0f737d16b0615e72a6935ed04214572d56f97"
 
-update-notifier@^2.1.0:
+update-notifier@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/update-notifier/-/update-notifier-2.3.0.tgz#4e8827a6bb915140ab093559d7014e3ebb837451"
   dependencies: