diff --git a/libbs/__init__.py b/libbs/__init__.py
index 2540447..7c319d9 100644
--- a/libbs/__init__.py
+++ b/libbs/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "3.3.0"
+__version__ = "3.3.1"
 
 
 import logging
diff --git a/libbs/api/type_parser.py b/libbs/api/type_parser.py
index 145c485..4ae896f 100644
--- a/libbs/api/type_parser.py
+++ b/libbs/api/type_parser.py
@@ -95,13 +95,6 @@ def __init__(
 
         # hack in type parsing
         self._type_parser_singleton = pycparser.CParser()
-        self._type_parser_singleton.cparser = pycparser.ply.yacc.yacc(
-            module=self._type_parser_singleton,
-            start='parameter_declaration',
-            debug=False,
-            optimize=False,
-            errorlog=errorlog
-        )
         self.ALL_TYPES = {}
         self.BASIC_TYPES = {}
         self.STDINT_TYPES = {}
@@ -207,15 +200,15 @@ def extract_type_name(self, type_str: str) -> str | None:
 
         return type_name
 
-    def parse_type(self, defn, preprocess=True, predefined_types=None, arch=None) -> Optional[CType]:  # pylint:disable=unused-argument
+    def parse_type(self, defn, predefined_types=None, arch=None) -> Optional[CType]:  # pylint:disable=unused-argument
         """
         Parse a simple type expression into a SimType
 
         >>> self.parse_type('int *')
         """
-        return self.parse_type_with_name(defn, preprocess=preprocess, predefined_types=predefined_types, arch=arch)[0]
+        return self.parse_type_with_name(defn, predefined_types=predefined_types, arch=arch)[0]
 
-    def parse_type_with_name(self, defn, preprocess=True, predefined_types=None, arch=None):  # pylint:disable=unused-argument
+    def parse_type_with_name(self, defn, predefined_types=None, arch=None):  # pylint:disable=unused-argument
         """
         Parse a simple type expression into a SimType, returning the a tuple of the type object and any associated name
         that might be found in the place a name would go in a type declaration.
@@ -228,8 +221,8 @@ def parse_type_with_name(self, defn, preprocess=True, predefined_types=None, arc
         if pycparser is None:
             raise ImportError("Please install pycparser in order to parse C definitions")
 
-        if preprocess:
-            defn = re.sub(r"/\*.*?\*/", r"", defn)
+        defn = re.sub(r"/\*.*?\*/", r"", defn, flags=re.DOTALL)
+        defn = re.sub(r"//.*?$", r"", defn, flags=re.MULTILINE)
 
         failed_parse = False
         try:
diff --git a/pyproject.toml b/pyproject.toml
index 77d9a48..57a6630 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ requires-python = ">= 3.10"
 dependencies = [
     "toml",
     "ply",
-    "pycparser",
+    "pycparser~=3.0",
     "setuptools",
     "prompt_toolkit",
     "tqdm",