diff --git a/docs/tools/release.sh b/docs/tools/release.sh
index 389b63ace7f..035581534f1 100755
--- a/docs/tools/release.sh
+++ b/docs/tools/release.sh
@@ -31,9 +31,11 @@ then
     git add *
     git add ".nojekyll"
 
-    # Push to GitHub rewriting the existing contents.
     git commit --quiet -m "Add new release at $(date)"
-    git push --force origin master
+
+    # Push to GitHub rewriting the existing contents.
+    # Sometimes it does not work with error message "! [remote rejected] master -> master (cannot lock ref 'refs/heads/master': is at 42a0f6b6b6c7be56a469441b4bf29685c1cebac3 but expected 520e9b02c0d4678a2a5f41d2f561e6532fb98cc1)"
+    for _ in {1..10}; do git push --force origin master && break; sleep 5; done
 
     if [[ ! -z "${CLOUDFLARE_TOKEN}" ]]
     then