diff --git a/setup.py b/setup.py
index 9d462ab..d0f92f0 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup
 
 setup(name="updater",
-version="0.3.1",
+version="0.3.2",
 author="MCVSoftware",
 author_email="support@mcvsoftware.com",
 url="https://github.com/mcvsoftware/updater",
diff --git a/updater/core.py b/updater/core.py
index e70ed5c..d7b3eb0 100644
--- a/updater/core.py
+++ b/updater/core.py
@@ -98,11 +98,18 @@ class UpdaterCore(object):
         :returns: The update file path in the system.
         :rtype: str
         """
-        def _download_callback(transferred_blocks, block_size, total_size):
-            total_downloaded = transferred_blocks*block_size
-            pub.sendMessage("updater.update-progress", total_downloaded=total_downloaded, total_size=total_size)
         request = urllib.request.Request(update_url, headers={"User-Agent": f"{self.app_name}/{self.current_version}"})
-        filename, headers = urllib.request.urlretrieve(request, update_destination, _download_callback)
+        with urllib.request.urlopen(request) as response:
+            total_size = int(response.headers.get("Content-Length", -1))
+            downloaded_size = 0
+            with open(update_destination, "wb") as out_file:
+                while True:
+                    chunk = response.read(chunk_size)
+                    if not chunk:
+                        break
+                    out_file.write(chunk)
+                    downloaded_size += len(chunk)
+                    pub.sendMessage("updater.update-progress", total_downloaded=downloaded_size, total_size=total_size)
         log.debug("Update downloaded")
         return update_destination
 
diff --git a/updater/wxupdater.py b/updater/wxupdater.py
index cf24f84..dd3db30 100644
--- a/updater/wxupdater.py
+++ b/updater/wxupdater.py
@@ -131,7 +131,7 @@ class WXUpdater(core.UpdaterCore):
         if total_downloaded == total_size:
             self.progress_dialog.Destroy()
         else:
-            self.progress_dialog.Update((total_downloaded*100)/total_size, self.update_progress_msg.format(total_downloaded=utils.convert_bytes(total_downloaded), total_size=utils.convert_bytes(total_size)))
+            self.progress_dialog.Update(int((total_downloaded*100)/total_size), self.update_progress_msg.format(total_downloaded=utils.convert_bytes(total_downloaded), total_size=utils.convert_bytes(total_size)))
             self.progress_dialog.SetTitle(self.update_progress_msg.format(total_downloaded=utils.convert_bytes(total_downloaded), total_size=utils.convert_bytes(total_size)))
 
     def on_update_almost_complete(self) -> None: