diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 0c065584d..8869962db 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -27,6 +27,7 @@ jobs:
           path-type: inherit
           install: >-
             zip
+            rsync
       -
         name: Checkout repository
         uses: actions/checkout@v3
diff --git a/src/bin/buildForWindows.sh b/src/bin/buildForWindows.sh
index be69273a2..723560507 100755
--- a/src/bin/buildForWindows.sh
+++ b/src/bin/buildForWindows.sh
@@ -33,6 +33,9 @@ try export GIT_WORK_TREE=${TMP_FOLDER}; git checkout HEAD -f \
     || fatal "failed to copy etherpad to temporary folder"
 try mkdir "${TMP_FOLDER}"/.git
 try git rev-parse HEAD >${TMP_FOLDER}/.git/HEAD
+try cp -r src/package.json src/package-lock.json "${TMP_FOLDER}"
+try rsync -a ./src/node_modules "${TMP_FOLDER}"/src/
+
 try cd "${TMP_FOLDER}"
 [ -f src/package.json ] || fatal "failed to copy etherpad to temporary folder"