diff --git a/package.json b/package.json
index 490a945..0a93f90 100644
--- a/package.json
+++ b/package.json
@@ -130,7 +130,7 @@
     "lint-staged": "^8.1.7",
     "prettier": "^1.17.1",
     "react-testing-library": "7.0.1",
-    "start-server-and-test": "^1.9.0",
+    "start-server-and-test": "^1.9.1",
     "stylelint": "^10.0.1",
     "stylelint-config-palantir": "^4.0.0",
     "stylelint-config-prettier": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index da3582d..61366bf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2366,10 +2366,10 @@ bluebird@3.5.0:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.0.tgz#791420d7f551eea2897453a8a77653f96606d67c"
   integrity sha1-eRQg1/VR7qKJdFOop3ZT+WYG1nw=
 
-bluebird@3.5.4, bluebird@^3.5.3:
-  version "3.5.4"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.4.tgz#d6cc661595de30d5b3af5fcedd3c0b3ef6ec5714"
-  integrity sha512-FG+nFEZChJrbQ9tIccIfZJBz3J7mLrAhxakAbnrJWn8d7aKOC+LWifa0G+p4ZqKp4y13T7juYvdhq9NzKdsrjw==
+bluebird@3.5.5, bluebird@^3.5.3:
+  version "3.5.5"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.5.tgz#a8d0afd73251effbbd5fe384a77d73003c17a71f"
+  integrity sha512-5am6HnnfN+urzt4yfg7IgTbotDjIT/u8AJpEt0sIU9FtXfVeezXAPKswrG+xKUCOYAINpSdgZVDU6QFh+cuH3w==
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
   version "4.11.8"
@@ -10807,12 +10807,12 @@ staged-git-files@1.1.2:
   resolved "https://registry.yarnpkg.com/staged-git-files/-/staged-git-files-1.1.2.tgz#4326d33886dc9ecfa29a6193bf511ba90a46454b"
   integrity sha512-0Eyrk6uXW6tg9PYkhi/V/J4zHp33aNyi2hOCmhFLqLTIhbgqWn5jlSzI+IU0VqrZq6+DbHcabQl/WP6P3BG0QA==
 
-start-server-and-test@^1.9.0:
-  version "1.9.0"
-  resolved "https://registry.yarnpkg.com/start-server-and-test/-/start-server-and-test-1.9.0.tgz#23bd9ff87dd259b5c9e51392cd6b70749ddd4b0a"
-  integrity sha512-aXOP5zL1CZnBX/N7ssnqQvYzoXMaG1H4rcGSZjqdi6Jth61xYUe+S/DQlE8PKFLoXnafceA61kdrv8xjG6mqyA==
+start-server-and-test@^1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/start-server-and-test/-/start-server-and-test-1.9.1.tgz#401fcf869c2a10b7d224a6ef2cfc38e2a69954a2"
+  integrity sha512-vRtUxxW34Li+EvemuWtgASyR2KBE+DPoEJ/l5REe+cKxm31jadGm1PSDVBronqQVsvhncRGm4iZc53pFH+FNEA==
   dependencies:
-    bluebird "3.5.4"
+    bluebird "3.5.5"
     check-more-types "2.24.0"
     debug "4.1.1"
     execa "0.11.0"