diff --git a/.github/workflows/aur-bin.yml b/.github/workflows/aur-bin.yml
index 563ca876f..36865aa26 100644
--- a/.github/workflows/aur-bin.yml
+++ b/.github/workflows/aur-bin.yml
@@ -106,10 +106,10 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "AUR-bin release PR for ${{ github.event.repository.name }} ${{ needs.get-version.outputs.semVerStr }} created."
           SLACK_MESSAGE: "See <${{ steps.create-pr.outputs.url }}|PR> on how to proceed."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
\ No newline at end of file
diff --git a/.github/workflows/check-jdk-updates.yml b/.github/workflows/check-jdk-updates.yml
index 9eae6da00..0b0c30db7 100644
--- a/.github/workflows/check-jdk-updates.yml
+++ b/.github/workflows/check-jdk-updates.yml
@@ -74,10 +74,10 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_URL }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "JDK update available"
           SLACK_MESSAGE: "Cryptomator-CI JDK can be upgraded to ${{ steps.determine.outputs.LATEST_JDK_VERSION }}. Check the Nextcloud collective for instructions."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
\ No newline at end of file
diff --git a/.github/workflows/linux-flatpak.yml b/.github/workflows/linux-flatpak.yml
index bd671e6d1..d73d25c11 100644
--- a/.github/workflows/linux-flatpak.yml
+++ b/.github/workflows/linux-flatpak.yml
@@ -255,10 +255,10 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "Flathub release PR created for ${{ github.event.repository.name }} ${{ github.event.release.tag_name }} created."
           SLACK_MESSAGE: "See <${{ steps.create-pr.outputs.FLATHUB_PR_URL }}|PR> on how to proceed."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
diff --git a/.github/workflows/linux-makepkg.yml b/.github/workflows/linux-makepkg.yml
index 1d9cbaa7a..b09ab4381 100644
--- a/.github/workflows/linux-makepkg.yml
+++ b/.github/workflows/linux-makepkg.yml
@@ -192,10 +192,10 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "AUR release PR created for ${{ github.event.repository.name }} ${{ steps.pkgrel.outputs.dist-version }} ."
           SLACK_MESSAGE: "See <${{ steps.create-pr.outputs.url }}|PR> on how to proceed."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
diff --git a/.github/workflows/post-publish.yml b/.github/workflows/post-publish.yml
index 68833f60a..fe6040f93 100644
--- a/.github/workflows/post-publish.yml
+++ b/.github/workflows/post-publish.yml
@@ -13,17 +13,17 @@ jobs:
   notify:
     runs-on: ubuntu-latest
     steps:
-      - name: Slack Notification
+      - name: Notify about DEB build
         uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # v2.3.3
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "Release ${{ github.event.repository.name }} ${{ github.event.release.tag_name }} published."
           SLACK_MESSAGE: "Ready to <https://github.com/${{ github.repository }}/actions/workflows/debian.yml|build deb Package>."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
       - name: Notify about latest-version update
         uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # v2.3.3
@@ -88,12 +88,12 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
           SLACK_TITLE: "Release ${{ github.event.repository.name }} ${{ github.event.release.tag_name }} published."
           SLACK_MESSAGE: "Ready to <https://github.com/${{ github.repository }}/actions/workflows/winget.yml|release to winget>."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true
 
   trigger-website-update: