diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d5db3cb..8776848 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,21 +16,18 @@ env:
   # Common versions
   PYTHON_VERSION: '3.11'
   HATCH_VERSION: '1.12.0'
-  DOCKER_BUILDX_VERSION: 'v0.11.2'
+  DOCKER_BUILDX_VERSION: 'v0.24.0'
 
   # These environment variables are important to the Crossplane CLI install.sh
   # script. They determine what version it installs.
-  XP_CHANNEL: master   # TODO(negz): Pin to stable once v1.14 is released.
-  XP_VERSION: current  # TODO(negz): Pin to a version once v1.14 is released.
-
-  # This CI job will automatically push new builds to xpkg.upbound.io if the
-  # XPKG_ACCESS_ID and XPKG_TOKEN secrets are set in the GitHub respository (or
-  # organization) settings. Create a token at https://accounts.upbound.io.
-  XPKG_ACCESS_ID: ${{ secrets.XPKG_ACCESS_ID }}
+  XP_CHANNEL: stable
+  XP_VERSION: v1.20.0
 
   # The package to push, without a version tag. The default matches GitHub. For
-  # example xpkg.upbound.io/crossplane/function-template-go.
-  XPKG: xpkg.upbound.io/${{ github.repository}}
+  # example xpkg.crossplane.io/crossplane/function-template-go. Note that
+  # xpkg.crossplane.io is just an alias for ghcr.io, so we upload to ghcr.io but
+  # this'll be pulled from xpkg.crossplane.io.
+  XPKG: ghcr.io/${{ github.repository}}
 
   # The package version to push. The default is 0.0.0-gitsha.
   XPKG_VERSION: ${{ inputs.version }}
@@ -127,8 +124,7 @@ jobs:
           retention-days: 1
 
   # This job downloads the single-platform packages built by the build job, and
-  # pushes them as a multi-platform package. We only push the package it the
-  # XPKG_ACCESS_ID and XPKG_TOKEN secrets were provided.
+  # pushes them as a multi-platform package.
   push:
     runs-on: ubuntu-24.04
     needs:
@@ -140,19 +136,20 @@ jobs:
       - name: Download Single-Platform Packages
         uses: actions/download-artifact@v4
         with:
+          # See https://github.com/docker/build-push-action/blob/263435/README.md#summaries
+          pattern: "!*.dockerbuild"
           path: .
           merge-multiple: true
 
       - name: Setup the Crossplane CLI
         run: "curl -sL https://raw.githubusercontent.com/crossplane/crossplane/master/install.sh | sh"
 
-      - name: Login to Upbound
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
-        if: env.XPKG_ACCESS_ID != ''
         with:
           registry: xpkg.upbound.io
-          username: ${{ secrets.XPKG_ACCESS_ID }}
-          password: ${{ secrets.XPKG_TOKEN }}
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       # If a version wasn't explicitly passed as a workflow_dispatch input we
       # default to version v0.0.0-<git-commit-date>-<git-short-sha>, for example
@@ -162,6 +159,5 @@ jobs:
         if: env.XPKG_VERSION == ''
         run: echo "XPKG_VERSION=v0.0.0-$(date -d@$(git show -s --format=%ct) +%Y%m%d%H%M%S)-$(git rev-parse --short=12 HEAD)" >> $GITHUB_ENV
 
-      - name: Push Multi-Platform Package to Upbound
-        if: env.XPKG_ACCESS_ID != ''
+      - name: Push Multi-Platform Package to GitHub Container Registry
         run: "./crossplane --verbose xpkg push --package-files $(echo *.xpkg|tr ' ' ,) ${{ env.XPKG }}:${{ env.XPKG_VERSION }}"