diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5e1ff879..6e7194ea 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -49,7 +49,13 @@ jobs:
 
       - name: Extract changelog entry
         id: changelog-entry
-        run: echo "content=$(awk '/^## \[${{ steps.new-version.outputs.version }}\]/{flag=1; next} /^## /{flag=0} flag' CHANGELOG.md)" >> "${GITHUB_OUTPUT}"
+        # See https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#multiline-strings
+        run: |
+          {
+            echo 'content<<CHANGELOG_END'
+            awk '/^## \[${{ steps.new-version.outputs.version }}\]/{flag=1; next} /^## /{flag=0} flag' CHANGELOG.md
+            echo CHANGELOG_END
+          } >> "${GITHUB_OUTPUT}"
 
       - name: Publish to crates.io
         # cargo-release calculates the dependency graph for us, and also skips any already