diff --git a/python/ionpy/Builder.py b/python/ionpy/Builder.py
index 7b7ccfaf..05ad4177 100644
--- a/python/ionpy/Builder.py
+++ b/python/ionpy/Builder.py
@@ -1,7 +1,4 @@
 import ctypes
-from typing import Optional
-from ctypes.util import find_library
-import os
 
 from .native import (
     c_ion_builder_t,
@@ -20,6 +17,7 @@
 
     ion_builder_run,
     ion_builder_run_with_port_map,
+
 )
 
 from .Node import Node
@@ -49,10 +47,7 @@ def set_target(self, target: str) -> 'Builder':
         return self
 
     def with_bb_module(self, path: str) -> 'Builder':
-        if os.name == 'nt':
-            ret = ion_builder_with_bb_module(self.obj, str(find_library(path)).encode())
-        else:
-            ret = ion_builder_with_bb_module(self.obj, path.encode())
+        ret = ion_builder_with_bb_module(self.obj,path.encode())
         if ret != 0:
             raise Exception('Invalid operation')
 
diff --git a/python/ionpy/native.py b/python/ionpy/native.py
index e6f0a84f..a551048f 100644
--- a/python/ionpy/native.py
+++ b/python/ionpy/native.py
@@ -1,13 +1,12 @@
 import ctypes
-from ctypes.util import find_library
-
 import os
 import platform
 
 pre_built_path = os.path.join(os.path.dirname(__file__), 'module')
 
 if platform.system() == 'Windows':
-    ion_core_module = find_library('ion-core.dll')
+    ion_core_module = os.path.join(pre_built_path, 'windows/ion-core.dll')
+    ion_bb_module = os.path.join(pre_built_path, 'windows/ion-bb.dll')
 elif platform.system() == 'Darwin':
     ion_core_module = os.path.join(pre_built_path, 'macos/libion-core.dylib')
     ion_bb_module = os.path.join(pre_built_path, 'macos/libion-bb.dylib')
@@ -19,8 +18,7 @@
 # ion-core.dll must be in a directory listed in %PATH%.
 # libion-core.dylib must be in a directory listed in $DYLD_LIBRARY_PATH.
 ion_core = ctypes.cdll.LoadLibrary(ion_core_module)
-if not platform.system() == 'Windows':
-    ion_bb = ctypes.cdll.LoadLibrary(ion_bb_module)
+ion_bb = ctypes.cdll.LoadLibrary(ion_bb_module)
 
 class c_ion_type_t(ctypes.Structure):
     _fields_ = [
diff --git a/python/ionpy/version.py b/python/ionpy/version.py
index 5b601886..e4adfb83 100644
--- a/python/ionpy/version.py
+++ b/python/ionpy/version.py
@@ -1 +1 @@
-__version__ = "1.5.0"
+__version__ = "1.6.0"