diff --git a/aptly/files/aptly-publisher.yaml b/aptly/files/aptly-publisher.yaml
index be90d06..35e4a32 100644
--- a/aptly/files/aptly-publisher.yaml
+++ b/aptly/files/aptly-publisher.yaml
@@ -8,6 +8,12 @@
       {%- for distribution in repo.publisher.distributions %}
       - {{ distribution }}
       {%- endfor %}
+    {%- if repo.publisher.architectures is defined %}
+    architectures:
+      {%- for arch in repo.publisher.architectures %}
+      - {{ arch }}
+      {%- endfor %}
+    {%- endif %}
 {%- endfor %}
 {%- else %}
 repo: {}
@@ -22,6 +28,12 @@
       {%- for distribution in mirror.publisher.distributions %}
       - {{ distribution }}
       {%- endfor %}
+    {%- if repo.publisher.architectures is defined %}
+    architectures:
+      {%- for arch in repo.publisher.architectures %}
+      - {{ arch }}
+      {%- endfor %}
+    {%- endif %}
 {%- endfor %}
 {%- else %}
 mirror: {}