diff --git a/package.json b/package.json
index 71ae473e772..6322e47f3b4 100644
--- a/package.json
+++ b/package.json
@@ -43,6 +43,7 @@
     "flow-bin": "^0.80.0",
     "flow-coverage-report": "^0.5.0",
     "glob": "^7.1.3",
+    "husky": "^0.14.3",
     "isomorphic-fetch": "^2.2.0",
     "jsdom": "^11.5.1",
     "json-loader": "^0.5.7",
@@ -104,7 +105,8 @@
     "refresh-schema": "./tools/postgres/refresh_schema.sh",
     "enable-autologin": "sed -i -e 's/enableDevAutoLogin = false/enableDevAutoLogin = true/g' ./conf/application.conf",
     "disable-autologin": "sed -i -e 's/enableDevAutoLogin = true/enableDevAutoLogin = false/g' ./conf/application.conf",
-    "coverage": "nyc report --reporter=text-lcov | coveralls"
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "postcheckout": "echo 'Deleting auto-generated flow files...' && rm app/assets/javascripts/test/snapshots/flow-check/*.js"
   },
   "lint-staged": {
     "*.js": [
diff --git a/yarn.lock b/yarn.lock
index 0a3c0705db7..dd09aeb1fa0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2286,6 +2286,10 @@ ci-info@^1.0.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.1.3.tgz#710193264bb05c77b8c90d02f5aaf22216a667b2"
 
+ci-info@^1.5.0:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.5.1.tgz#17e8eb5de6f8b2b6038f0cbb714d410bfa9f3030"
+
 cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz#8760e4ecc272f4c363532f926d874aae2c1397de"
@@ -5013,6 +5017,14 @@ hullabaloo-config-manager@^1.1.0:
     resolve-from "^3.0.0"
     safe-buffer "^5.0.1"
 
+husky@^0.14.3:
+  version "0.14.3"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-0.14.3.tgz#c69ed74e2d2779769a17ba8399b54ce0b63c12c3"
+  dependencies:
+    is-ci "^1.0.10"
+    normalize-path "^1.0.0"
+    strip-indent "^2.0.0"
+
 iconv-lite@0.4.19, iconv-lite@^0.4.17, iconv-lite@~0.4.13:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
@@ -5270,6 +5282,12 @@ is-callable@^1.1.1, is-callable@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.3.tgz#86eb75392805ddc33af71c92a0eedf74ee7604b2"
 
+is-ci@^1.0.10:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-1.2.1.tgz#e3779c8ee17fccf428488f6e281187f2e632841c"
+  dependencies:
+    ci-info "^1.5.0"
+
 is-ci@^1.0.7:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-1.1.0.tgz#247e4162e7860cebbdaf30b774d6b0ac7dcfe7a5"
@@ -6964,6 +6982,10 @@ normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
+normalize-path@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-1.0.0.tgz#32d0e472f91ff345701c15a8311018d3b0a90379"
+
 normalize-path@^2.0.0, normalize-path@^2.0.1, normalize-path@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.1.1.tgz#1ab28b556e198363a8c1a6f7e6fa20137fe6aed9"
@@ -10099,6 +10121,10 @@ strip-indent@^1.0.1:
   dependencies:
     get-stdin "^4.0.1"
 
+strip-indent@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-2.0.0.tgz#5ef8db295d01e6ed6cbf7aab96998d7822527b68"
+
 strip-json-comments@2.0.1, strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"