diff --git a/README.md b/README.md
index a723ac48a..c0463188b 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ git clone https://codeberg.org/thatonecalculator/calckey.git
 cd calckey/
 cp ../misskey/.config/default.yml ./.config/default.yml # or wherever misskey folder is
 yarn --version # Check version is yarn 3.2.1!
-YARN_CHECKSUM_BEHAVIOR=update yarn install
+yarn install
 NODE_ENV=production npm run build && npm run migrate
 # Edit service to point to calckey service and restart
 ```