diff --git a/vendor/docker-nixos/build.sh b/vendor/docker-nixos/build.sh
index 43681d4..991ef71 100644
--- a/vendor/docker-nixos/build.sh
+++ b/vendor/docker-nixos/build.sh
@@ -2,16 +2,6 @@
 
 set -exEuo pipefail
 
-git fetch --tags
-
-nixos_tag="$(
-    git tag |
-        grep '^nixos-' |
-        sed -e 's/^nixos-//' |
-        sort -V |
-        tail -n1
-)"
-
 if [ -z "$NIXOS_TAG" ]; then 
   echo "Error: NIXOS_TAG is not set or is empty."
   exit 1