diff --git a/Makefile b/Makefile
index f360c4e..328e074 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ ifneq ($(ver),)
 	# Ensure 'docker buildx ls' shows correct platforms.
 	docker buildx build \
 		--tag $(drepo)/nats-box:$(ver) --tag $(drepo)/nats-box:latest \
-		--platform linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8 \
+		--platform linux/amd64,linux/s390x,linux/arm/v6,linux/arm/v7,linux/arm64/v8 \
 		--push .
 else
 	# Missing version, try this.
diff --git a/docker-bake.hcl b/docker-bake.hcl
index 15f359b..9986497 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -31,7 +31,7 @@ function "get_tags_suffix" {
 
 function "get_platforms_multiarch" {
   params = []
-  result = CI ? ["linux/amd64", "linux/arm/v6", "linux/arm/v7", "linux/arm64"] : []
+  result = CI ? ["linux/amd64", "linux/s390x", "linux/arm/v6", "linux/arm/v7", "linux/arm64"] : []
 }
 
 function "get_output" {