diff --git a/.azure-pipelines/azure-pipelines-win.yml b/.azure-pipelines/azure-pipelines-win.yml
index 4c11f4748..c4b0e7b6d 100755
--- a/.azure-pipelines/azure-pipelines-win.yml
+++ b/.azure-pipelines/azure-pipelines-win.yml
@@ -12,6 +12,10 @@ jobs:
         CONFIG: win_64_
         UPLOAD_PACKAGES: 'True'
         SHORT_CONFIG: win_64_
+      win_arm64_:
+        CONFIG: win_arm64_
+        UPLOAD_PACKAGES: 'True'
+        SHORT_CONFIG: win_arm64_
   timeoutInMinutes: 360
   variables:
     CONDA_BLD_PATH: D:\\bld\\
diff --git a/.ci_support/migrations/libffi35.yaml b/.ci_support/migrations/libffi35.yaml
deleted file mode 100644
index cccfdc464..000000000
--- a/.ci_support/migrations/libffi35.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-__migrator:
-  build_number: 1
-  commit_message: Rebuild for libffi 3.5
-  kind: version
-  migration_number: 1
-libffi:
-- '3.5'
-migrator_ts: 1760302128.4447467
diff --git a/.ci_support/win_arm64_.yaml b/.ci_support/win_arm64_.yaml
new file mode 100644
index 000000000..435b2b016
--- /dev/null
+++ b/.ci_support/win_arm64_.yaml
@@ -0,0 +1,39 @@
+build_type:
+- release
+bzip2:
+- '1'
+c_compiler:
+- vs2022
+c_stdlib:
+- vs
+channel_sources:
+- conda-forge
+channel_targets:
+- conda-forge main
+cxx_compiler:
+- vs2022
+expat:
+- '2'
+libffi:
+- '3.5'
+liblzma_devel:
+- '5'
+openssl:
+- '3.5'
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- '3.12'
+sqlite:
+- '3'
+target_platform:
+- win-arm64
+tk:
+- '8.6'
+zip_keys:
+- - build_type
+  - channel_targets
+zlib:
+- '1'
diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index 361edeb2c..bac7141a9 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -63,6 +63,25 @@ if [[ "${sha:-}" == "" ]]; then
   sha=$(git rev-parse HEAD)
 fi
 
+if [[ "${OSX_SDK_DIR:-}" == "" ]]; then
+  if [[ "${CI:-}" == "" ]]; then
+    echo "Please set OSX_SDK_DIR to a directory where SDKs can be downloaded to. Aborting"
+    exit 1
+  else
+    export OSX_SDK_DIR=/opt/conda-sdks
+    /usr/bin/sudo mkdir -p "${OSX_SDK_DIR}"
+    /usr/bin/sudo chown "${USER}" "${OSX_SDK_DIR}"
+  fi
+else
+  if tmpf=$(mktemp -p "$OSX_SDK_DIR" tmp.XXXXXXXX 2>/dev/null); then
+      rm -f "$tmpf"
+      echo "OSX_SDK_DIR is writeable without sudo, continuing"
+  else
+      echo "User-provided OSX_SDK_DIR is not writeable for current user! Aborting"
+      exit 1
+  fi
+fi
+
 echo -e "\n\nRunning the build setup script."
 source run_conda_forge_build_setup
 
diff --git a/README.md b/README.md
index 36ec5225a..67e03ffbe 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,13 @@ Current build status
                   <img src="https://dev.azure.com/conda-forge/feedstock-builds/_apis/build/status/python-feedstock?branchName=main&jobName=win&configuration=win%20win_64_" alt="variant">
                 </a>
               </td>
+            </tr><tr>
+              <td>win_arm64</td>
+              <td>
+                <a href="https://dev.azure.com/conda-forge/feedstock-builds/_build/latest?definitionId=4155&branchName=main">
+                  <img src="https://dev.azure.com/conda-forge/feedstock-builds/_apis/build/status/python-feedstock?branchName=main&jobName=win&configuration=win%20win_arm64_" alt="variant">
+                </a>
+              </td>
             </tr>
           </tbody>
         </table>
diff --git a/conda-forge.yml b/conda-forge.yml
index 52e254134..fb963c568 100644
--- a/conda-forge.yml
+++ b/conda-forge.yml
@@ -10,6 +10,7 @@ build_platform:
   linux_aarch64: linux_64
   linux_ppc64le: linux_64
   osx_arm64: osx_64
+  win_arm64: win_64
 conda_build:
   pkg_format: '2'
 conda_forge_output_validation: true
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index e3a08b9a3..15f57b815 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -80,6 +80,8 @@ build:
 
 requirements:
   build:
+    - python                                 # [build_platform != target_platform]
+    - cross-python_{{ target_platform }}     # [build_platform != target_platform]
 {% if from_source_control == 'yes' %}
     - git
 {% else %}