diff --git a/package.json b/package.json
index 01aafef..ddb64c4 100644
--- a/package.json
+++ b/package.json
@@ -9,12 +9,12 @@
     "test": "CI=true yarn --cwd web test && yarn --cwd api test"
   },
   "dependencies": {
-    "now": "^16.4.0"
+    "now": "^16.7.0"
   },
   "devDependencies": {
-    "husky": "^3.0.9",
-    "prettier": "^1.18.2",
-    "pretty-quick": "^2.0.0"
+    "husky": "^3.1.0",
+    "prettier": "^1.19.1",
+    "pretty-quick": "^2.0.1"
   },
   "author": "Yasuaki Uechi <y@uechi.io> (https://uechi.io/)",
   "license": "Apache-2.0",
diff --git a/yarn.lock b/yarn.lock
index b2978a5..bd39d14 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -244,10 +244,10 @@ hosted-git-info@^2.1.4:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.5.tgz#759cfcf2c4d156ade59b0b2dfabddc42a6b9c70c"
   integrity sha512-kssjab8CvdXfcXMXVcvsXum4Hwdq9XGtRD3TteMEvEbq0LXyiNQr6AprqKqfeaDXze7SxWvRxdpwE6ku7ikLkg==
 
-husky@^3.0.9:
-  version "3.0.9"
-  resolved "https://registry.yarnpkg.com/husky/-/husky-3.0.9.tgz#a2c3e9829bfd6b4957509a9500d2eef5dbfc8044"
-  integrity sha512-Yolhupm7le2/MqC1VYLk/cNmYxsSsqKkTyBhzQHhPK1jFnC89mmmNVuGtLNabjDI6Aj8UNIr0KpRNuBkiC4+sg==
+husky@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-3.1.0.tgz#5faad520ab860582ed94f0c1a77f0f04c90b57c0"
+  integrity sha512-FJkPoHHB+6s4a+jwPqBudBDvYZsoQW5/HBuMSehC8qDiCe50kpcxeqFoDSlow+9I6wg47YxBoT3WxaURlrDIIQ==
   dependencies:
     chalk "^2.4.2"
     ci-info "^2.0.0"
@@ -377,10 +377,10 @@ normalize-package-data@^2.5.0:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
-now@^16.4.0:
-  version "16.4.0"
-  resolved "https://registry.yarnpkg.com/now/-/now-16.4.0.tgz#4f852d820925ef25f2eb767f6c07f55378713612"
-  integrity sha512-4k4PzuwPrvAFQToBDr+mWDlICPmSMwCFndFC91NjQix/bqScvmOozM8c8VEHAlPi6y45ee2tCXJhvymX7dCeoQ==
+now@^16.7.0:
+  version "16.7.0"
+  resolved "https://registry.yarnpkg.com/now/-/now-16.7.0.tgz#4a1f1588410e7cbe9ca8d2c3fdcdc61e7116e8cc"
+  integrity sha512-YUMFYphAxcLE441/o2h55QgtXerF3M0GlQgy7ihJhPcz6OsllCqGgxaN5/XgnAJOlgKCW84HxSB8ZzCY55H4lQ==
 
 npm-run-path@^2.0.0:
   version "2.0.2"
@@ -496,15 +496,15 @@ please-upgrade-node@^3.2.0:
   dependencies:
     semver-compare "^1.0.0"
 
-prettier@^1.18.2:
-  version "1.18.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
-  integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==
+prettier@^1.19.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+  integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
 
-pretty-quick@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/pretty-quick/-/pretty-quick-2.0.0.tgz#fe3cf9b677c40e2ae96244f515239db425040a7a"
-  integrity sha512-PcM4S8nTMloTWl1KRkvkf0wAd4+WMH1Lzysey/xyTF5736bwltVyZXlnzP8l/0qUrpvmtzIpm2ecYiX84Qf5Yg==
+pretty-quick@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/pretty-quick/-/pretty-quick-2.0.1.tgz#417ee605ade98ecc686e72f63b5d28a2c35b43e9"
+  integrity sha512-y7bJt77XadjUr+P1uKqZxFWLddvj3SKY6EU4BuQtMxmmEFSMpbN132pUWdSG1g1mtUfO0noBvn7wBf0BVeomHg==
   dependencies:
     chalk "^2.4.2"
     execa "^2.1.0"