diff --git a/.github/update_release_notes.js b/.github/update_release_notes.js
deleted file mode 100644
index e0708c23..00000000
--- a/.github/update_release_notes.js
+++ /dev/null
@@ -1,31 +0,0 @@
-// Replace ${VARIABLES} in the RELEASE_NOTES_TEMPLATE.md file.
-// Used by .github/workflows/publish.yml.
-const fsp = require('fs').promises;
-
-module.exports = async ({github, context, process}) => {
-    const fileOpts = { encoding: 'utf8' };
-    let template = await fsp.readFile(process.env.TEMPLATE_FILE, fileOpts);
-    for (const [key, value] of Object.entries(process.env)) {
-        template = template.replaceAll(`\${${key}}`, value);
-    }
-
-    let hashes = await fsp.readFile(process.env.SHA256SUM_TXT, fileOpts);
-    hashes = hashes.trim()
-    template = template.replace('${SHA256SUM}', hashes);
-
-    const release = await github.rest.repos.getReleaseByTag({
-        ...context.repo,
-        tag: process.env.GITHUB_REF_NAME,
-    });
-    const body = (release.body || '').trim();
-
-    if (body.includes(hashes)) {
-        throw new Error('The release template has already been applied.');
-    }
-
-    return await github.rest.repos.updateRelease({
-        ...context.repo,
-        release_id: release.id,
-        body: template.replace('${BODY}', body),
-    });
-}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bcd7d209..4d1f3e24 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -108,16 +108,31 @@ jobs:
             ./hashes/* \
             ./${{ needs.slsa.outputs.provenance-name }}/*.intoto.jsonl \
             ./signing-artifacts-sigstore/*/*.sigstore
+      - name: Add SHA256SUM environment variable
+        run: |
+          EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
+          echo "SHA256SUM<<$EOF" >> "$GITHUB_ENV"
+          cat ./hashes/*.sha256sum.txt >> "$GITHUB_ENV"
+          echo "$EOF" >> "$GITHUB_ENV"
       - name: Update release text
         env:
+          BODY: ${{ github.event.release.body || '' }}
+          RELEASE_ID: ${{ github.event.release.id }}
           TEMPLATE_FILE: ./.github/RELEASE_NOTES_TEMPLATE.md
-          SHA256SUM_TXT: ./hashes/pywemo-${{ needs.build.outputs.version }}.sha256sum.txt
         uses: actions/github-script@v6
         with:
           script: |
-            const update = require('./.github/update_release_notes.js')
-            const result = await update({github, context, process});
-            console.log(result);
+            const fsp = require('fs').promises;
+            let template = await fsp.readFile(process.env.TEMPLATE_FILE, { encoding: 'utf8' });
+            for (const [key, value] of Object.entries(process.env)) {
+                template = template.replaceAll(`\${${key}}`, value);
+            }
+
+            await github.rest.repos.updateRelease({
+                ...context.repo,
+                release_id: process.env.RELEASE_ID,
+                body: template.replace('${BODY}', body),
+            });
 
   pypi:
     name: Publish to PyPi
diff --git a/pyproject.toml b/pyproject.toml
index 3accf7ad..c48e4910 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "pywemo-esev"
-version = "0.9.1rc17"
+version = "0.9.1rc18"
 description = "Lightweight Python module to discover and control WeMo devices"
 authors = ["Eric Severance <pywemo@esev.com>"]
 license = "MIT"