diff --git a/.github/workflows/publish-testpypi.yml b/.github/workflows/publish-testpypi.yml
index 41c2731b..57a6c83b 100644
--- a/.github/workflows/publish-testpypi.yml
+++ b/.github/workflows/publish-testpypi.yml
@@ -1,31 +1,29 @@
 name: Publish to TestPyPI
-
 on:
   push:
     tags:
       - 'v*'
-
 permissions:
   id-token: write
   contents: read
-
 jobs:
   test:
     uses: ./.github/workflows/quality.yml
-
+  
   publish:
     needs: test
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/v')
-
-    steps:
+    environment:
+      name: pypi
+    steps:      
       - name: Download distributions
         uses: actions/download-artifact@v4
         with:
           name: distributions
           path: dist/
-
-      - name: Upload to TestPyPI
+      
+      - name: Upload to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          repository-url: https://test.pypi.org/legacy/
+          repository-url: https://test.pypi.org/legacy/        
\ No newline at end of file
diff --git a/fluids/__init__.py b/fluids/__init__.py
index 65056a4a..58e55ce5 100644
--- a/fluids/__init__.py
+++ b/fluids/__init__.py
@@ -168,7 +168,7 @@ def all_submodules(with_numerics=True):
     return new_submodules
 
 
-__version__ = "1.2.6"
+__version__ = "1.2.9"
 
 try:
     fluids_dir = os.path.dirname(__file__)
diff --git a/pyproject.toml b/pyproject.toml
index a827476c..6a9d4734 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ backend-path = ["_custom_build"]
 
 [project]
 name = "fluids"
-version = "1.2.6"
+version = "1.2.9"
 description = "Fluid dynamics component of Chemical Engineering Design Library (ChEDL)"
 readme = "README.rst"
 requires-python = ">=3.9"
@@ -132,7 +132,7 @@ dev = [
 
 [project.urls]
 Homepage = "https://github.com/CalebBell/fluids"
-Download = "https://github.com/CalebBell/fluids/tarball/1.2.6"
+Download = "https://github.com/CalebBell/fluids/tarball/1.2.9"
 
 [tool.setuptools]
 packages = ["fluids"]
@@ -289,7 +289,7 @@ extend-ignore = [
     "RET",
     "RSE102",
     "RUF001",
-    "RUF003",  # greek characters are used in this project e.g. for allotropes, not an issue
+    "RUF003",  # greek characters are used in this project e.g. for allotropes
     "RUF005",  # this one is not micropython compatible
     # "S101",  # Use assert - removed from global ignore, now controlled by per-file-ignores below
     "S110",