diff --git a/build_all_zig.sh b/build_all_zig.sh
index ea7bc45860a06a8c14241b5d3a04411de64b4f75..9a52aea07bbc13c612f87a7cfea5282b43ab5b31 100755
--- a/build_all_zig.sh
+++ b/build_all_zig.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-date=$(date +'%Y.%m.%d')
+date=$(date +'%Y%m%d')
 version=${CIRCLE_BUILD_NUM-$date}
 tag=v$version.$(git log --format=%h -1)