diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2091fc1..98b3d29 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -123,7 +123,10 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U mypy types-Markdown
+          python -m pip install -U types-Markdown
+
+          # Exclude version due to: https://github.com/python/mypy/issues/16770
+          python -m pip install -U "mypy != 1.8.0"
 
       - name: Type Check
         run: |
diff --git a/systemrdl/__about__.py b/systemrdl/__about__.py
index beee42a..5976158 100644
--- a/systemrdl/__about__.py
+++ b/systemrdl/__about__.py
@@ -1 +1 @@
-__version__ = "1.27.2"
+__version__ = "1.27.3"
diff --git a/systemrdl/node.py b/systemrdl/node.py
index 62fae63..9176002 100644
--- a/systemrdl/node.py
+++ b/systemrdl/node.py
@@ -1089,8 +1089,8 @@ def is_volatile(self) -> bool:
             (hw in (rdltypes.AccessType.rw, rdltypes.AccessType.rw1,
                     rdltypes.AccessType.w, rdltypes.AccessType.w1))
             or self.get_property('counter')
-            or self.get_property('hwset')
-            or self.get_property('hwclr')
+            or bool(self.get_property('hwset'))
+            or bool(self.get_property('hwclr'))
         )
 
     @property
diff --git a/test/run.sh b/test/run.sh
index 58a039e..cfecec9 100755
--- a/test/run.sh
+++ b/test/run.sh
@@ -21,7 +21,9 @@ source $this_dir/.venv/bin/activate
 
 # Install test dependencies
 pip install -U pip setuptools wheel
-pip install pytest pytest-cov coverage pylint mypy parameterized types-Markdown pytest-parallel
+pip install pytest pytest-cov coverage pylint parameterized types-Markdown pytest-parallel
+# Exclude version due to: https://github.com/python/mypy/issues/16770
+pip install "mypy != 1.8.0"
 
 # Install dut
 export SYSTEMRDL_REQUIRE_BINARY_BUILD=1