diff --git a/.github/workflows/ibmq_tests.yml b/.github/workflows/ibmq_tests.yml
index a094d1b0f..edbf3e7f8 100644
--- a/.github/workflows/ibmq_tests.yml
+++ b/.github/workflows/ibmq_tests.yml
@@ -1,7 +1,7 @@
-name: IBMQ integration tests
+name: IBMQ integration tests with Qiskit 1.0
 on:
   schedule:
-    - cron: '0 0 * * 0,4' # At 00:00 on Sunday and Thursday.
+    - cron: '1 0 * * 0,4' # At 01:00 on Sunday and Thursday.
   workflow_dispatch:
 
 jobs:
@@ -28,7 +28,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements-ci-legacy.txt
+          pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
           pip freeze
 
diff --git a/.github/workflows/ibmq_tests_1.yml b/.github/workflows/ibmq_tests_1.yml
deleted file mode 100644
index edbf3e7f8..000000000
--- a/.github/workflows/ibmq_tests_1.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-name: IBMQ integration tests with Qiskit 1.0
-on:
-  schedule:
-    - cron: '1 0 * * 0,4' # At 01:00 on Sunday and Thursday.
-  workflow_dispatch:
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        python-version: [3.9]
-
-    steps:
-      - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.4.1
-        with:
-          access_token: ${{ github.token }}
-
-      - uses: actions/checkout@v2
-
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements-ci.txt
-          pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
-          pip freeze
-
-      - name: Install Plugin
-        run: |
-          pip install git+https://github.com/PennyLaneAI/pennylane-qiskit.git@${{ github.ref }}
-          pip freeze
-
-      - name: Run tests
-        # Only run IBMQ and Runtime tests (skipped otherwise)
-        run: python -m pytest tests -k 'test_ibmq.py or test_runtime.py' --cov=pennylane_qiskit --cov-report=term-missing --cov-report=xml -p no:warnings --tb=native
-        env:
-          IBMQX_TOKEN: ${{ secrets.IBMQX_TOKEN_TEST }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3703508a6..1ad3c3b53 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,4 +1,4 @@
-name: Tests
+name: Tests for 1.0
 on:
   push:
     branches:
@@ -30,7 +30,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install git+https://github.com/PennyLaneAI/pennylane.git
-          pip install -r requirements-ci-legacy.txt
+          pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
           pip freeze
 
@@ -39,12 +39,9 @@ jobs:
           pip install git+https://github.com/PennyLaneAI/pennylane-qiskit.git@${{ github.ref }}
           pip freeze
 
-      - name: Run tests
-        # Skip IBMQ and Runtime tests as they depend on IBMQ's availability and
-        # easily result in timeouts
+      - name: Run standard Qiskit plugin tests
+        # Run the standard tests with the most recent version of Qiskit
         run: python -m pytest tests -k 'not test_ibmq.py and not test_runtime.py' --cov=pennylane_qiskit --cov-report=term-missing --cov-report=xml -p no:warnings --tb=native
-        env:
-          IBMQX_TOKEN: ${{ secrets.IBMQX_TOKEN_TEST }}
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4
@@ -72,19 +69,17 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install git+https://github.com/PennyLaneAI/pennylane.git
-          pip install -r requirements-ci-legacy.txt
+          pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock pytest-benchmark flaky --upgrade
-          pip freeze
 
       - name: Install Plugin
         run: |
           python setup.py bdist_wheel
           pip install dist/PennyLane*.whl
-          pip freeze
 
       - name: Run tests
         run: |
-          pl-device-test --device=qiskit.basicaer --tb=short --skip-ops --shots=20000 --device-kwargs backend=qasm_simulator
+          pl-device-test --device=qiskit.basicsim --tb=short --skip-ops --shots=20000 --device-kwargs backend=basic_simulator
           pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=20000 --device-kwargs backend=qasm_simulator
           pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=None --device-kwargs backend=statevector_simulator
           pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=None --device-kwargs backend=unitary_simulator
diff --git a/.github/workflows/tests_qiskit_1.yml b/.github/workflows/tests_qiskit_1.yml
deleted file mode 100644
index 1ad3c3b53..000000000
--- a/.github/workflows/tests_qiskit_1.yml
+++ /dev/null
@@ -1,91 +0,0 @@
-name: Tests for 1.0
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        python-version: [3.9, '3.10', '3.11']
-
-    steps:
-      - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.4.1
-        with:
-          access_token: ${{ github.token }}
-
-      - uses: actions/checkout@v2
-
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install git+https://github.com/PennyLaneAI/pennylane.git
-          pip install -r requirements-ci.txt
-          pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
-          pip freeze
-
-      - name: Install Plugin
-        run: |
-          pip install git+https://github.com/PennyLaneAI/pennylane-qiskit.git@${{ github.ref }}
-          pip freeze
-
-      - name: Run standard Qiskit plugin tests
-        # Run the standard tests with the most recent version of Qiskit
-        run: python -m pytest tests -k 'not test_ibmq.py and not test_runtime.py' --cov=pennylane_qiskit --cov-report=term-missing --cov-report=xml -p no:warnings --tb=native
-
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
-        with:
-          token: ${{ secrets.codecov_token }}
-          file: ./coverage.xml
-
-  integration-tests:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.4.1
-        with:
-          access_token: ${{ github.token }}
-
-      - uses: actions/checkout@v2
-
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.9
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install git+https://github.com/PennyLaneAI/pennylane.git
-          pip install -r requirements-ci.txt
-          pip install wheel pytest pytest-cov pytest-mock pytest-benchmark flaky --upgrade
-
-      - name: Install Plugin
-        run: |
-          python setup.py bdist_wheel
-          pip install dist/PennyLane*.whl
-
-      - name: Run tests
-        run: |
-          pl-device-test --device=qiskit.basicsim --tb=short --skip-ops --shots=20000 --device-kwargs backend=basic_simulator
-          pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=20000 --device-kwargs backend=qasm_simulator
-          pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=None --device-kwargs backend=statevector_simulator
-          pl-device-test --device=qiskit.aer --tb=short --skip-ops --shots=None --device-kwargs backend=unitary_simulator
-
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
-        with:
-          token: ${{ secrets.codecov_token }}
-          file: ./coverage.xml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 624711b2d..8de4f43dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@
 ### Improvements 🛠
 
 ### Breaking changes 💔
+* Support has been removed for Qiskit versions below 0.46. The minimum required version for Qiskit is now 1.0. 
+  If you want to continue to use older versions of Qiskit with the plugin, please use version 0.36 of 
+  the Pennylane-Qiskit plugin. 
+  [(#536)](https://github.com/PennyLaneAI/pennylane-qiskit/pull/536)
+
+* The test suite no longer runs for Qiskit versions below 0.46.
+  [(#536)](https://github.com/PennyLaneAI/pennylane-qiskit/pull/536)
 
 ### Deprecations 👋
 
@@ -15,6 +22,7 @@
 ### Contributors ✍️
 
 This release contains contributions from (in alphabetical order):
+Austin Huang
 
 ---
 # Release 0.36.0
diff --git a/requirements-ci-legacy.txt b/requirements-ci-legacy.txt
deleted file mode 100644
index f33b309b7..000000000
--- a/requirements-ci-legacy.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-pennylane>=0.32
-qiskit<0.46
-qiskit-ibm-runtime<0.21
-numpy
-sympy
diff --git a/tests/test_qiskit_device.py b/tests/test_qiskit_device.py
index 57b4d2aa9..34b958b1f 100644
--- a/tests/test_qiskit_device.py
+++ b/tests/test_qiskit_device.py
@@ -174,16 +174,16 @@ def test_warning_raised_for_hardware_backend_analytic_expval(self, recorder):
         with pytest.warns(UserWarning) as record:
             dev = qml.device("qiskit.aer", backend="aer_simulator", wires=2, shots=None)
 
-        # check that only one warning was raised
-        assert len(record) == 1
-        # check that the message matches
         assert (
-            record[0].message.args[0] == "The analytic calculation of "
+            record[1].message.args[0] == "The analytic calculation of "
             "expectations, variances and probabilities is only supported on "
             f"statevector backends, not on the {dev.backend.name}. Such statistics obtained from this "
             "device are estimates based on samples."
         )
 
+        # Two warnings are being raised: one about analytic calculations and another about deprecation.
+        assert len(record) == 2
+
     @pytest.mark.parametrize("method", ["unitary", "statevector"])
     def test_no_warning_raised_for_software_backend_analytic_expval(
         self, method, recorder, recwarn
@@ -193,8 +193,10 @@ def test_no_warning_raised_for_software_backend_analytic_expval(
 
         _ = qml.device("qiskit.aer", backend="aer_simulator", method=method, wires=2, shots=None)
 
-        # check that no warnings were raised
-        assert len(recwarn) == 0
+        # These simulators are being deprecated. Warning is raised in Qiskit 1.0
+        # Migrate to AerSimulator with AerSimulator(method=method) and append
+        # run circuits with the `save_state` instruction.
+        assert len(recwarn) == 1
 
 
 class TestAerBackendOptions: