diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 1a2334db..902da4d2 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -25,30 +25,30 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       
       - name: Print triggering event info
         run: |
           echo "${{ github.actor }} triggered run #${{ github.run_number }} with event type ${{ github.event_name }}"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
         
       - name: Login to DockerHub
-        uses: docker/login-action@v1 
+        uses: docker/login-action@v3 
         with:
           username: ${{ secrets.DOCKERHUB_NREL_USER }}
           password: ${{ secrets.DOCKERHUB_NREL_TOKEN }}
       
       - name: Login to GitHub Package Registry
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
           
       - name: Build and push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v5
         with:
           context: .
           file: ./docker/Dockerfile
diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 81275235..9c903f82 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -1,4 +1,4 @@
-name: test
+name: test     
 
 on: [pull_request, push]
 
@@ -60,7 +60,7 @@ jobs:
         echo "/home/runner/work/bifacial_radiance/bifacial_radiance/SMARTS_295_Linux" >> $GITHUB_PATH
 
     - name: Test with pytest ${{ matrix.env }}
-      uses: coactions/setup-xvfb@v1  # GUI testing requires xvfb
+      uses: coactions/setup-xvfb@6b00cf1889f4e1d5a48635647013c0508128ee1a  # GUI testing requires xvfb
       with:
         run: |
           pytest --cov=bifacial_radiance
diff --git a/bifacial_radiance/main.py b/bifacial_radiance/main.py
index 93d52dfb..28faddc7 100644
--- a/bifacial_radiance/main.py
+++ b/bifacial_radiance/main.py
@@ -1141,12 +1141,22 @@ def _saveTempTMY(self, tmydata, filename=None, starttime=None, endtime=None,
             elif coerce_year is None:
                 coerce_year = 2021                
             print(f"Coercing year to {coerce_year}")
-            with warnings.catch_warnings():
-                warnings.simplefilter("ignore")
-                tmydata.index.values[:] = tmydata.index[:] + pd.DateOffset(year=(coerce_year))
-                # Correcting last index to next year.
-                tmydata.index.values[-1] = tmydata.index[-1] + pd.DateOffset(year=(coerce_year+1))
-        
+            #with warnings.catch_warnings():
+            #    warnings.simplefilter("ignore")  # can't get rid of vectorized 
+            #tmydata.index.values[:] = tmydata.index[:] + pd.DateOffset(year=(coerce_year))
+            #tmydata.index.values[-1] = tmydata.index[-1] + pd.DateOffset(year=(coerce_year+1))
+            tz = tmydata.index.tz
+            year_vector = np.full(shape=tmydata.__len__(), fill_value=coerce_year)
+            year_vector[-1] = coerce_year+1
+            tmydata.index =  pd.to_datetime({
+                                'year': year_vector,
+                                'month': tmydata.index.month,
+                                'day': tmydata.index.day,
+                                'hour': tmydata.index.hour})
+            tmydata = tmydata.tz_localize(tz)
+
+
+
             # FilterDates
             filterdates = None
             if starttime is not None and endtime is not None:
diff --git a/docs/sphinx/source/whatsnew/pending.rst b/docs/sphinx/source/whatsnew/pending.rst
index 9c4e0faa..ebca08c8 100644
--- a/docs/sphinx/source/whatsnew/pending.rst
+++ b/docs/sphinx/source/whatsnew/pending.rst
@@ -47,6 +47,8 @@ Bug fixes
 * Numpy 2.0 compatibility bug  (:issue:`521`)
 * Fixed bug in :func:`bifacial_radiance.mismatch.mismatch_fit3` where the function was not returning the correct values. It has also been deprecated in favour of :func:`bifacial_radiance.mismatch.mismatch_fit2` which has a greater agreement with anual energy yield data (:issue:`520`)
 * Fixed typo on Opacity calculation factor (:issue:`426`)
+* Updated Github Actions to use Node20: checkout@v4,  setup-python@v5, coactions/setup-xvfb, setup-buildx-action@v3 (:pull:`517`)
+* Fix PerformanceWarning and SettingWithCopyWarning (:issue:`515`)
 
 Documentation
 ~~~~~~~~~~~~~~