diff --git a/.github/workflows/pypi.yaml b/.github/workflows/pypi.yaml
index 592f71d3..5148ce44 100644
--- a/.github/workflows/pypi.yaml
+++ b/.github/workflows/pypi.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Build distribution
-        uses: uclahs-cds/tool-pypi-publish-action/build-distribution@0d60e0c0d46ea8d0486bb15d8940587121f44fd2
+        uses: uclahs-cds/tool-pypi-publish-action/build-distribution@58e64514405eafe4f8c40130001cbd4d62acdf5c
         with:
           package-name: mopepgen
 
@@ -35,6 +35,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Publish to PyPI
-        uses: uclahs-cds/tool-pypi-publish-action/publish-to-pypi@0d60e0c0d46ea8d0486bb15d8940587121f44fd2
+        uses: uclahs-cds/tool-pypi-publish-action/publish-to-pypi@58e64514405eafe4f8c40130001cbd4d62acdf5c
         with:
           package-name: mopepgen
+          url: https://upload.pypi.org/legacy/
diff --git a/moPepGen/__init__.py b/moPepGen/__init__.py
index ad13a51a..c9955db4 100644
--- a/moPepGen/__init__.py
+++ b/moPepGen/__init__.py
@@ -8,7 +8,7 @@
 from . import constant
 
 
-__version__ = '1.3.2'
+__version__ = '1.4.0'
 
 ## Error messages
 ERROR_INDEX_IN_INTRON = 'The genomic index seems to be in an intron'