diff --git a/.woodpecker/build-docker.yml b/.woodpecker/build-docker.yml
index f1be880..9edd155 100644
--- a/.woodpecker/build-docker.yml
+++ b/.woodpecker/build-docker.yml
@@ -47,4 +47,4 @@ pipeline:
       platforms: linux/amd64,linux/arm64/v8
       tag: ${TAG}
       build_args:
-        - TAG: ${ELIXIR_VERSION}-erlang-${OTP_VERSION}-alpine-3.18.4
+        TAG: ${ELIXIR_VERSION}-erlang-${OTP_VERSION}-alpine-3.18.4