diff --git a/.github/workflows/cd.yaml b/.github/workflows/cd.yaml
index 11bd2518..1645a7cc 100644
--- a/.github/workflows/cd.yaml
+++ b/.github/workflows/cd.yaml
@@ -31,5 +31,5 @@ jobs:
       - name: Build & Publish to PyPi
         run: |
           pip install poetry
-          cd $PACKAGE_PATH         
-          poetry publish --build --username="__token__" --no-interaction --password="${{ secrets.PYPI_TOKEN }}"
\ No newline at end of file
+          cd $PACKAGE_PATH  
+          poetry publish --build --username="__token__" --no-interaction --password="${{ secrets.PYPI_TOKEN }}"
diff --git a/.github/workflows/release-trigger.yaml b/.github/workflows/release-trigger.yaml
new file mode 100644
index 00000000..c6d1862b
--- /dev/null
+++ b/.github/workflows/release-trigger.yaml
@@ -0,0 +1,38 @@
+name: Check Version Update
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  check-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Push tag for each updated package
+        run: |
+          git config --global user.name "SDK Releaser Bot"
+          git config --global user.email "noreply@stackit.de"
+
+          for file in $(git diff --name-only HEAD~1..HEAD | grep pyproject.toml); do
+              # Extract the change regarding the version from the pyproject.toml file
+              version_changes=$(git diff HEAD~1..HEAD $file | grep "version =")
+              # Check if the extracted change is not empty
+              if [ -n "$version_changes" ]; then
+                  # Split all found version changes, so we can compare the old and new version.
+                  splitted_version_changes=($(echo "$version_changes" | grep -oP '(?<=version = )[^ ]*'))
+                  # Only create a tag if there has been an actual change in the version, not just a format change.
+                  if [ $(echo "${splitted_version_changes[@]}" | tr ' ' '\n' | sort -u | wc -l) -ne 1 ]; then
+                      dirpath=$(dirname $file)
+                      # Extract just the version number
+                      current_version=$(grep -o "version = .*" ${file} | cut -d '=' -f 2-)
+                      dirpath=$(dirname $file)
+                      cleaned_version=$(echo "$current_version" | tr -d '" ')
+                      # Create the tag based on the updated service and the new version
+                      tag=$(echo "${dirpath}/${cleaned_version}")
+                      git tag -a $tag -m "Release $cleaned_version"
+                      git push origin tag $tag
+                  fi            
+              fi            
+          done
\ No newline at end of file
diff --git a/core/pyproject.toml b/core/pyproject.toml
index ba89996d..9b2d4eb3 100644
--- a/core/pyproject.toml
+++ b/core/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "stackit-core"
-version = "0.0.1a1"
+version = "0.0.1a"
 authors = [
   "STACKIT Developer Tools <developer-tools@stackit.cloud>",
 ]
diff --git a/services/dns/pyproject.toml b/services/dns/pyproject.toml
index 8a0cd6c6..d45211b4 100644
--- a/services/dns/pyproject.toml
+++ b/services/dns/pyproject.toml
@@ -102,4 +102,4 @@ per-file-ignores = """
     # E501: long descriptions/string values might lead to lines that are too long
     # B028: stacklevel for deprecation warning is irrelevant
   ./src/stackit/*/api/default_api.py: F841,B028,E501
-"""
\ No newline at end of file
+"""