diff --git a/.envrc b/.envrc
index c8c8ff6..3f42776 100644
--- a/.envrc
+++ b/.envrc
@@ -13,9 +13,17 @@ PATH_add bin
 python3 -m pip --require-virtualenv --quiet install --upgrade pip wheel
 python3 -m pip --require-virtualenv --quiet install --upgrade -r requirements.txt
 
-rm -rf .cache/bw/git_deploy
-export BW_GIT_DEPLOY_CACHE=.cache/bw/git_deploy
+# git deploy cache
+export BW_GIT_DEPLOY_CACHE=".cache/bw/git_deploy"
+CREATED_AT=$(stat -f "%Sa" "$BW_GIT_DEPLOY_CACHE" | xargs -I{} date -f '%b %d %H:%M:%S %Y' -j "{}" '+%s')
+NOW_AT=$(date +%s)
+SECONDS_SINCE=$(expr "$NOW_AT" - "$CREATED_AT")
+if [[ "$SECONDS_SINCE" > 86400 ]]
+then
+  rm -rf "$BW_GIT_DEPLOY_CACHE"
+fi
 mkdir -p "$BW_GIT_DEPLOY_CACHE"
+
 export EXPERIMENTAL_UPLOAD_VIA_CAT=1
 export BW_ITEM_WORKERS=32
 export BW_NODE_WORKERS=12