diff --git a/.github/workflows/publish_MachSysS.yml b/.github/workflows/publish_MachSysS.yml
index fed95ba..8fb92dd 100644
--- a/.github/workflows/publish_MachSysS.yml
+++ b/.github/workflows/publish_MachSysS.yml
@@ -32,6 +32,7 @@ jobs:
   publish-to-pypi:
     name: >-
       Publish Python 🐍 distribution 📦 to PyPI
+    if: startsWith(github.ref, 'refs/tags/') # only publish to PyPI on tag pushes
     needs:
       - build
     runs-on: ubuntu-latest
diff --git a/.github/workflows/publish_RunFeemsSim.yml b/.github/workflows/publish_RunFeemsSim.yml
index 0bb6aa3..fc2a530 100644
--- a/.github/workflows/publish_RunFeemsSim.yml
+++ b/.github/workflows/publish_RunFeemsSim.yml
@@ -32,6 +32,7 @@ jobs:
   publish-to-pypi:
     name: >-
       Publish Python 🐍 distribution 📦 to PyPI
+    if: startsWith(github.ref, 'refs/tags/') # only publish to PyPI on tag pushes
     needs:
       - build
     runs-on: ubuntu-latest
diff --git a/.github/workflows/publish_feems.yml b/.github/workflows/publish_feems.yml
index 7996144..17b4eeb 100644
--- a/.github/workflows/publish_feems.yml
+++ b/.github/workflows/publish_feems.yml
@@ -32,6 +32,7 @@ jobs:
   publish-to-pypi:
     name: >-
       Publish Python 🐍 distribution 📦 to PyPI
+    if: startsWith(github.ref, 'refs/tags/') # only publish to PyPI on tag pushes
     needs:
       - build
     runs-on: ubuntu-latest