diff --git a/maintainer/ci/cirrus-deploy.yml b/maintainer/ci/cirrus-deploy.yml
index e00b4b6c232..3861e6ae497 100644
--- a/maintainer/ci/cirrus-deploy.yml
+++ b/maintainer/ci/cirrus-deploy.yml
@@ -17,7 +17,7 @@ linux_aarch64_wheel_task:
     memory: 4G
   env:
     CIBW_BUILD: cp39-manylinux_* cp310-manylinux_* cp311-manylinux_* cp312-manylinux_*
-    CIBW_ARCHS: ARM64
+    CIBW_ARCHS: aarch64
 
   build_script: |
     apt install -y python3-venv python-is-python3
@@ -31,7 +31,7 @@ macos_arm64_wheel_task:
     image: ghcr.io/cirruslabs/macos-monterey-xcode:14
   env:
     CIBW_BUILD: cp39-* cp310-* cp311-* cp312-*
-    CIBW_ARCHS: ARM64
+    CIBW_ARCHS: arm64
     PATH: /opt/homebrew/opt/python@3.10/bin:$PATH
 
   build_script: |