diff --git a/package.json b/package.json
index b012db7..da10b16 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "bats": "^1.8.2",
+    "bats": "^1.9.0",
     "bats-assert": "ztombol/bats-assert",
     "bats-support": "ztombol/bats-support"
   },
diff --git a/yarn.lock b/yarn.lock
index dad53d0..a81d597 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10,7 +10,7 @@ bats-support@ztombol/bats-support:
   version "0.3.0"
   resolved "https://codeload.github.com/ztombol/bats-support/tar.gz/004e707638eedd62e0481e8cdc9223ad471f12ee"
 
-bats@^1.8.2:
-  version "1.8.2"
-  resolved "https://registry.yarnpkg.com/bats/-/bats-1.8.2.tgz#bdbaa7690a18f04291b35144a8ce5435cffb8dc5"
-  integrity sha512-KLUIaPYuIMjqui8MbZmK84+CiwhjFVFAhFy5PXP0prLbkovc5faVzc+Qaowbz76F97zP573JrF31ODFAH7vzhg==
+bats@^1.9.0:
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/bats/-/bats-1.9.0.tgz#251a255b58b631f210d75db6ba376a7c2be1b9fd"
+  integrity sha512-Z5BJaAmmHv/ujj7obhjEzJ//OL+ZtjVq0iRnHu+2fE9OeUaPMbJpBgYiOdNbDrG3E2hqe84/AXNnS/UiXl/UcA==