diff --git a/dockerfiles/sep/build.sh b/dockerfiles/sep/build.sh
index fcfea14..632a637 100755
--- a/dockerfiles/sep/build.sh
+++ b/dockerfiles/sep/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 docker build --no-cache -t tabledevil/sep:latest -f sep_dev.dockerfile  .
-tag=$(docker run -it tabledevil/sep:latest version | grep -Pio "(?<=Dockertag: )[\d._]+" )
+tag=$( docker run -it tabledevil/sep:latest tag )
 echo "NEW TAG : ${tag}"
 docker tag tabledevil/sep tabledevil/sep:${tag}
 docker push "tabledevil/sep:${tag}"