diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
index 70a58851b1..af334b0a2b 100644
--- a/.github/CHANGELOG.md
+++ b/.github/CHANGELOG.md
@@ -27,6 +27,9 @@
 * Fix failed tests for the non-binary wheel.
 [(#213)](https://github.com/PennyLaneAI/pennylane-lightning/pull/213)
 
+* Fix failed tests on Windows.
+[(#218)](https://github.com/PennyLaneAI/pennylane-lightning/pull/218)
+
 ### Contributors
 
 This release contains contributions from (in alphabetical order):
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 1821e4f465..c7090225af 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -68,7 +68,7 @@ jobs:
           access_token: ${{ github.token }}
 
       - name: Install dependencies
-        run: sudo apt update && sudo apt -y install clang-format-11 python3
+        run: sudo apt update && sudo apt -y install clang-format-12 python3
 
       - name: Checkout code
         uses: actions/checkout@v2
diff --git a/tests/test_adjoint_jacobian.py b/tests/test_adjoint_jacobian.py
index 79a3464e6b..34557ae69f 100644
--- a/tests/test_adjoint_jacobian.py
+++ b/tests/test_adjoint_jacobian.py
@@ -159,6 +159,9 @@ def test_unsupported_hermitian_expectation(self, dev):
         ):
             dev.adjoint_jacobian(tape)
 
+    @pytest.mark.skipif(
+        not hasattr(np, "complex256"), reason="Numpy only defines complex256 in Linux-like system"
+    )
     @pytest.mark.skipif(not lq._CPP_BINARY_AVAILABLE, reason="Lightning binary required")
     def test_unsupported_complex_type(self, dev):
         dev._state = dev._asarray(dev._state, np.complex256)
diff --git a/tests/test_apply.py b/tests/test_apply.py
index 7423122c6b..5d456872fe 100644
--- a/tests/test_apply.py
+++ b/tests/test_apply.py
@@ -89,6 +89,9 @@ class TestApply:
 
     from pennylane_lightning import LightningQubit as lq
 
+    @pytest.mark.skipif(
+        not hasattr(np, "complex256"), reason="Numpy only defines complex256 in Linux-like system"
+    )
     @pytest.mark.skipif(not lq._CPP_BINARY_AVAILABLE, reason="Lightning binary required")
     def test_apply_operation_raise_type_error(self, qubit_device_1_wire):
         """Tests that applying an operation yields the expected output state for single wire
diff --git a/tests/test_vector_jacobian_product.py b/tests/test_vector_jacobian_product.py
index 8f25758456..791bc8627a 100644
--- a/tests/test_vector_jacobian_product.py
+++ b/tests/test_vector_jacobian_product.py
@@ -35,6 +35,9 @@ class TestComputeVJP:
     def dev(self):
         return qml.device("lightning.qubit", wires=2)
 
+    @pytest.mark.skipif(
+        not hasattr(np, "complex256"), reason="Numpy only defines complex256 in Linux-like system"
+    )
     def test_unsupported_complex_type(self, dev):
         dev._state = dev._asarray(dev._state, np.complex256)
 
@@ -113,6 +116,9 @@ class TestVectorJacobianProduct:
     def dev(self):
         return qml.device("lightning.qubit", wires=2)
 
+    @pytest.mark.skipif(
+        not hasattr(np, "complex256"), reason="Numpy only defines complex256 in Linux-like system"
+    )
     def test_unsupported_complex_type(self, dev):
         dev._state = dev._asarray(dev._state, np.complex256)
 
@@ -438,6 +444,9 @@ class TestBatchVectorJacobianProduct:
     def dev(self):
         return qml.device("lightning.qubit", wires=2)
 
+    @pytest.mark.skipif(
+        not hasattr(np, "complex256"), reason="Numpy only defines complex256 in Linux-like system"
+    )
     def test_unsupported_complex_type(self, dev):
         dev._state = dev._asarray(dev._state, np.complex256)