diff --git a/CALCKEY.md b/CALCKEY.md
index 3c4a10a9b0..21f7ff2d84 100644
--- a/CALCKEY.md
+++ b/CALCKEY.md
@@ -4,6 +4,7 @@
 
 - MFM button
 - Better Messaging UI
+- Classic mode make instance icon bring up new context menu
 - Like/star button
 - Option to publicize instance blocks
 - Better intro/onboarding
diff --git a/README.md b/README.md
index 401ab42ae4..aabcf91cb3 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ yarn set version berry
 git clone https://codeberg.org/thatonecalculator/calckey.git
 cd calckey/
 cp ../misskey/.config/default.yml ./.config/default.yml # or wherever misskey folder is
-yarn install
+yarn install # Prepend `YARN_CHECKSUM_BEHAVIOR=update` if it doesn't work
 NODE_ENV=production npm run build && npm run migrate
 # Edit service to point to calckey folder and restart!
 ```