diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index 15db348..d2a033e 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -4,6 +4,17 @@ on:
   push:
     tags:
       - v*
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to create release for (e.g., v1.2.3)'
+        required: true
+        type: string
+      skip_pypi:
+        description: 'Skip PyPI publication (for manual runs)'
+        required: false
+        type: boolean
+        default: false
 
 jobs:
   build:
@@ -33,7 +44,7 @@ jobs:
   publish-to-pypi:
     name: >-
       publish-to-pypi 📢
-    if: ${{startsWith(github.ref, 'refs/tags/') && !contains(github.ref, '.dev')}}  # only publish to PyPI on tag pushes
+    if: ${{ (startsWith(github.ref, 'refs/tags/') && !contains(github.ref, 'dev')) || (github.event_name == 'workflow_dispatch' && !inputs.skip_pypi) }}
     needs:
     - build
     runs-on: ubuntu-latest
@@ -70,7 +81,7 @@ jobs:
         name: python-package-distributions
         path: dist/
     - name: sign-with-sigstore
-      uses: sigstore/gh-action-sigstore-python@v2.1.1
+      uses: sigstore/gh-action-sigstore-python@v3.0.1
       with:
         inputs: >-
           ./dist/*.tar.gz
@@ -117,4 +128,4 @@ jobs:
     - name: publish-dist-to-testpypi
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
-        repository-url: https://test.pypi.org/legacy/
\ No newline at end of file
+        repository-url: https://test.pypi.org/legacy/
diff --git a/pyproject.toml b/pyproject.toml
index 33dbb2d..f3ae425 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "decombinator"
-version = "5.0.0.dev0"
+version = "5.0.1"
 description = "A fast and efficient tool for the analysis of T-cell receptor repertoire sequences produced by deep sequencing."
 readme = "README.md"
 license = {file = "LICENSE"}
diff --git a/src/decombinator/__init__.py b/src/decombinator/__init__.py
index e69de29..2fe5fde 100644
--- a/src/decombinator/__init__.py
+++ b/src/decombinator/__init__.py
@@ -0,0 +1 @@
+__version__ = "5.0.1"