diff --git a/.ci/upload_win_installer.sh b/.ci/upload_win_installer.sh
index c235eee0e..15b7a11af 100644
--- a/.ci/upload_win_installer.sh
+++ b/.ci/upload_win_installer.sh
@@ -1,11 +1,8 @@
-#!/bin/sh
+#!/bin/bash
 
 dest="ftp://shelter.mahoro-net.org/aegisub-japan7"
-
 tag=$(git describe --exact-match)
 [ "$tag" ] || exit
+
 curl -T 'packages\win_installer\output\Aegisub-Japan7-x64.exe' --user $FTP_USER:$FTP_PASS "$dest/Aegisub-Japan7-x64-${tag#v}.exe"
-
-printf "${tag#v}\n$(git tag -l --format='%contents' $tag)" > latest
-curl -T latest --user "$FTP_USER:$FTP_PASS" "$dest/"
-
+curl -T <(printf "${tag#v}\n$(git tag -l --format='%contents' $tag)") --user "$FTP_USER:$FTP_PASS" "$dest/"
diff --git a/appveyor.yml b/appveyor.yml
index ae4b1a9fd..8ee18bd2c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -79,7 +79,7 @@ after_build:
   - cd ..\..
 
 on_success:
-  - bash.exe .ci\\upload_win_installer.sh
+  - sh: bash .ci/upload_win_installer.sh
 
 artifacts:
   - path: packages\win_installer\output\Aegisub-Japan7-x64.exe