diff --git a/.github/workflows/icbundle.yml b/.github/workflows/icbundle.yml
index 3dd811cb7..1c861009c 100644
--- a/.github/workflows/icbundle.yml
+++ b/.github/workflows/icbundle.yml
@@ -48,7 +48,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           rev_num=$(git rev-list v7.0.0-rc4.. --count)
-          changelog_entry=$' Changelog\\n\\n## Development Build: v7.0.0-rc4+dev'${rev_num}
+          changelog_entry=$'# Changelog\\n\\n## Development Build: v7.0.0-rc4+dev'${rev_num}
           prs=$(echo ${{ inputs.pr_nums }} | tr "," "\n")
           see_entry=$'\-\ See:'
           for pr in $prs
@@ -59,7 +59,7 @@ jobs:
           done
           changelog_entry="${changelog_entry}\n${see_entry}\n"
           echo awk 'NR==1,/Changelog/{sub(/Changelog/, $changelog_entry)} 1' CHANGELOG.md
-          awk 'NR==1,/Changelog/{sub(/Changelog/, $changelog_entry)} 1' CHANGELOG.md > CHANGELOG.md
+          sed -ir "s|# Changelog|$changelog_entry|" CHANGELOG.md
           
           buildnumber_entry=$'define CFE_BUILD_NUMBER   '${rev_num}$' /**< @brief Development: Number of development git commits since CFE_BUILD_BASELINE */'
           sed -ir "s|define CFE_BUILD_NUMBER.*|$buildnumber_entry|" modules/core_api/fsw/inc/cfe_version.h