diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 564b2a3c467..0122ef24319 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,34 +1,14 @@
-name: Publish tagged Picnic release variant to GitHub Packages
+name: Configure `~/.m2/toolchains.xml`
 on:
   push:
-    tags:
-      - 'v*-picnic-*'
 permissions:
   contents: read
 jobs:
   publish:
     runs-on: ubuntu-24.04
-    permissions:
-      contents: read
-      packages: write
     steps:
-      - name: Install Harden-Runner
-        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
-        with:
-          disable-sudo: true
-          egress-policy: block
-          allowed-endpoints: >
-            api.adoptium.net:443
-            github.com:443
-            maven.pkg.github.com:443
-            objects.githubusercontent.com:443
-            oss.sonatype.org:443
-            repo.maven.apache.org:443
-      # XXX: We're using `actions/setup-java` here because
-      # `s4u/setup-maven-action` does not appear to support the multi-version
-      # `java-version` syntax in a way that also causes both versions to be
-      # registered in `~/.m2/toolchains.xml`. See
-      # https://github.com/s4u/setup-maven-action/pull/112.
+      - name: Show original `~/.m2/toolchains.xml`.
+        run: cat ~/.m2/toolchains.xml || echo "File is absent"
       - name: Set up JDKs
         uses: actions/setup-java@7a6d8a8234af8eb26422e24e3006232cccaa061b # v4.6.0
         with:
@@ -36,19 +16,5 @@ jobs:
             24-ea
             17
           distribution: temurin
-      - name: Check out code and set up Maven
-        uses: s4u/setup-maven-action@9a27433d289dd99d73851f653607c39d3444e8ba # v1.17.0
-        with:
-          java-version: 17
-          java-distribution: temurin
-          maven-version: 3.9.9
-      - name: Determine and export release version
-        run: echo "RELEASE_VERSION=${GITHUB_REF_NAME#v*}" >> $GITHUB_ENV
-      - name: Configure release version
-        run: mvn versions:set -DnewVersion=${{ env.RELEASE_VERSION }}
-      - name: Publish package
-        run: mvn -B deploy -DaltDeploymentRepository=github::https://maven.pkg.github.com/PicnicSupermarket/error-prone
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Remove installed project artifacts
-        run: mvn dependency:purge-local-repository -DmanualInclude='${project.groupId}' -DresolutionFuzziness=groupId
+      - name: Show `~/.m2/toolchains.xml` after `actions/setup-java`.
+        run: cat ~/.m2/toolchains.xml