diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
index 05edc385c6..60bb1c67e2 100644
--- a/.github/CHANGELOG.md
+++ b/.github/CHANGELOG.md
@@ -46,6 +46,9 @@
 
 ### Improvements
 
+*  Fix PTM stable-latest.
+  [(#961)](https://github.com/PennyLaneAI/pennylane-lightning/pull/961)
+
 * Update `README.rst` installation instructions for `lightning.gpu` and `lightning.tensor`.
   [(#957)](https://github.com/PennyLaneAI/pennylane-lightning/pull/957)
 
diff --git a/.github/workflows/tests_gpu_python.yml b/.github/workflows/tests_gpu_python.yml
index 37a9ca95d6..241b0726e9 100644
--- a/.github/workflows/tests_gpu_python.yml
+++ b/.github/workflows/tests_gpu_python.yml
@@ -150,13 +150,20 @@ jobs:
         run: |
           python -m pip install cutensornet-cu${{ matrix.cuda_version }}
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/.github/workflows/tests_lgpumpi_python.yml b/.github/workflows/tests_lgpumpi_python.yml
index 79c2f3ea48..fa195d397e 100644
--- a/.github/workflows/tests_lgpumpi_python.yml
+++ b/.github/workflows/tests_lgpumpi_python.yml
@@ -120,13 +120,20 @@ jobs:
           python scripts/configure_pyproject_toml.py || true
           python -m pip install . -vv
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/.github/workflows/tests_lkcpu_python.yml b/.github/workflows/tests_lkcpu_python.yml
index 99a858ada3..b211ac527d 100644
--- a/.github/workflows/tests_lkcpu_python.yml
+++ b/.github/workflows/tests_lkcpu_python.yml
@@ -214,13 +214,20 @@ jobs:
           fi
           python -m pip install ${{ github.workspace }}/$WHEEL_NAME --no-deps
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/.github/workflows/tests_lkcuda_python.yml b/.github/workflows/tests_lkcuda_python.yml
index 20b50042d4..a018cc1453 100644
--- a/.github/workflows/tests_lkcuda_python.yml
+++ b/.github/workflows/tests_lkcuda_python.yml
@@ -213,13 +213,20 @@ jobs:
           python -m pip install -r requirements-dev.txt
           python -m pip install openfermionpyscf
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+  
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/.github/workflows/tests_lqcpu_python.yml b/.github/workflows/tests_lqcpu_python.yml
index a65d9b4d69..2284831ec4 100644
--- a/.github/workflows/tests_lqcpu_python.yml
+++ b/.github/workflows/tests_lqcpu_python.yml
@@ -161,13 +161,20 @@ jobs:
           python -m pip install semantic-version
           python -m pip install ${{ github.workspace }}/$WHEEL_NAME --no-deps --force-reinstall
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/.github/workflows/tests_without_binary.yml b/.github/workflows/tests_without_binary.yml
index b69ba2d69f..ac484d940d 100644
--- a/.github/workflows/tests_without_binary.yml
+++ b/.github/workflows/tests_without_binary.yml
@@ -84,13 +84,20 @@ jobs:
           rm -fr $(python -m pip cache dir)/selfcheck/
           python -m pip install -r requirements-dev.txt
 
-      - name: Checkout PennyLane for release build
-        if: inputs.pennylane-version == 'release'
+      - name: Checkout PennyLane for release or latest build
+        if: inputs.pennylane-version == 'release' || inputs.pennylane-version == 'latest'
         uses: actions/checkout@v4
         with:
           path: pennylane
           repository: PennyLaneAI/pennylane
 
+      - name: Switch to latest build of PennyLane
+        if: inputs.pennylane-version == 'latest'
+        run: |
+          cd pennylane
+          git checkout master
+          python -m pip uninstall -y pennylane && python -m pip install . -vv --no-deps
+
       - name: Switch to release build of PennyLane
         if: inputs.pennylane-version == 'release'
         run: |
diff --git a/pennylane_lightning/core/_version.py b/pennylane_lightning/core/_version.py
index eba0279f93..a9b42bc9f7 100644
--- a/pennylane_lightning/core/_version.py
+++ b/pennylane_lightning/core/_version.py
@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.39.0-dev49"
+__version__ = "0.39.0-dev50"