diff --git a/servefile b/servefile
index b409f65..bb8bb35 100755
--- a/servefile
+++ b/servefile
@@ -14,7 +14,6 @@ import base64
 import cgi
 import datetime
 import mimetypes
-import urllib
 import os
 import re
 import select
@@ -27,10 +26,12 @@ import time
 try:
     import BaseHTTPServer
     import SocketServer
+    from urllib import quote, unquote
 except ImportError:
     # both have different names in python3
     import http.server as BaseHTTPServer
     import socketserver as SocketServer
+    from urllib.parse import quote, unquote
 
 # only activate SSL if available
 HAVE_SSL = False
@@ -56,7 +57,7 @@ class FileBaseHandler(BaseHTTPServer.BaseHTTPRequestHandler):
 		Returns True if a redirect was issued. """
 		if not fileName:
 			fileName = self.fileName
-		if urllib.unquote(self.path) != "/" + fileName:
+		if unquote(self.path) != "/" + fileName:
 			self.send_response(302)
 			self.send_header('Location', '/' + fileName)
 			self.end_headers()
@@ -346,12 +347,12 @@ class DirListingHandler(FileBaseHandler):
 				<p>The requestet URL %s was not found on this server</p>
 				<p><a href="/">Back to /</a>
 				</body>
-				</html>""" % self.escapeHTML(urllib.unquote(self.path))
+				</html>""" % self.escapeHTML(unquote(self.path))
 			self.send_header("Content-Length", str(len(errorMsg)))
 			self.send_header('Connection', 'close')
 			self.end_headers()
 			if not head:
-				self.wfile.write(errorMsg)
+				self.wfile.write(errorMsg.encode())
 
 	def escapeHTML(self, htmlstr):
 		entities = [("<", "&lt;"), (">", "&gt;")]
@@ -378,7 +379,7 @@ class DirListingHandler(FileBaseHandler):
 				<td class="size">%s</td>
 				<td class="type">%s</td>
 			</tr>
-		""" % (urllib.quote(item), item, lastModified, fileSize, fileType))
+		""" % (quote(item), item, lastModified, fileSize, fileType))
 
 	def sendDirectoryListing(self, path, head):
 		""" Generate a directorylisting for path and send it """
@@ -414,7 +415,7 @@ class DirListingHandler(FileBaseHandler):
 			</tr>
 		</thead>
 		<tbody>
-		""" % {'path': os.path.normpath(urllib.unquote(self.path))}
+		""" % {'path': os.path.normpath(unquote(self.path))}
 		footer = """</tbody></table></div>
 <div class="footer"><a href="http://seba-geek.de/stuff/servefile/">servefile %(version)s</a></div>
 <script>
@@ -540,7 +541,7 @@ class DirListingHandler(FileBaseHandler):
 		self.send_header("Content-Length", str(len(listing)))
 		self.send_header('Connection', 'close')
 		self.end_headers()
-		self.wfile.write(listing)
+		self.wfile.write(listing.encode())
 
 	def convertSize(self, size):
 		for ext in "KMGT":
@@ -552,7 +553,7 @@ class DirListingHandler(FileBaseHandler):
 		return (size, ext.strip())
 
 	def getCleanPath(self):
-		urlPath = os.path.normpath(urllib.unquote(self.path)).strip("/")
+		urlPath = os.path.normpath(unquote(self.path)).strip("/")
 		path = os.path.join(self.targetDir, urlPath)
 		return path
 
@@ -594,7 +595,8 @@ class FilePutter(BaseHTTPServer.BaseHTTPRequestHandler):
 		length = self.getContentLength()
 		if length < 0:
 			return
-		ctype = self.headers.getheader('Content-Type')
+		print(self.headers)
+		ctype = self.headers.get('Content-Type')
 
 		# check for multipart/form-data.
 		if not (ctype and ctype.lower().startswith("multipart/form-data")):
@@ -615,7 +617,7 @@ class FilePutter(BaseHTTPServer.BaseHTTPRequestHandler):
 			return
 
 		# write file down to disk, send a 200 afterwards
-		target = open(destFileName, "w")
+		target = open(destFileName, "wb")
 		bytesLeft = length
 		while bytesLeft > 0:
 			bytesToRead = min(self.blockSize, bytesLeft)
@@ -638,7 +640,7 @@ class FilePutter(BaseHTTPServer.BaseHTTPRequestHandler):
 		if length < 0:
 			return
 
-		fileName = urllib.unquote(self.path)
+		fileName = unquote(self.path)
 		if fileName == "/":
 			# if no filename was given we have to generate one
 			fileName = str(time.time())
@@ -685,7 +687,7 @@ class FilePutter(BaseHTTPServer.BaseHTTPRequestHandler):
 		self.send_header('Content-Length', str(len(msg)))
 		self.send_header('Connection', 'close')
 		self.end_headers()
-		self.wfile.write(msg)
+		self.wfile.write(msg.encode())
 
 	def getTargetName(self, fname):
 		""" Generate a clean and secure filename.
@@ -831,7 +833,7 @@ class ServeFile():
 				# we couldn't find any ip address
 				proc = None
 		if proc:
-			ips = proc.stdout.read().strip().split("\n")
+			ips = proc.stdout.read().decode().strip().split("\n")
 
 			# filter out ips we are not listening on
 			if not self.listenIPv6:
@@ -877,7 +879,7 @@ class ServeFile():
 		for ip in self.getIPs() + ["127.0.0.1", "::1"]:
 			altNames.append("IP:%s" % ip)
 		altNames.append("DNS:localhost")
-		ext = crypto.X509Extension("subjectAltName", False, ",".join(altNames))
+		ext = crypto.X509Extension(b"subjectAltName", False, (",".join(altNames)).encode())
 		req.add_extensions([ext])
 
 		req.set_pubkey(pkey)
@@ -901,8 +903,8 @@ class ServeFile():
 		self.key = pkey
 
 		print("done.")
-		print("SHA1 fingerprint:", cert.digest("sha1"))
-		print("MD5  fingerprint:", cert.digest("md5"))
+		print("SHA1 fingerprint:", cert.digest("sha1").decode())
+		print("MD5  fingerprint:", cert.digest("md5").decode())
 
 	def _getCert(self):
 		return self.cert
@@ -913,7 +915,7 @@ class ServeFile():
 	def setAuth(self, user, password, realm=None):
 		if not user or not password:
 			raise ServeFileException("User and password both need to be at least one character.")
-		self.auth = base64.b64encode("%s:%s" % (user, password))
+		self.auth = base64.b64encode(("%s:%s" % (user, password)).encode()).decode()
 		self.authrealm = realm
 
 	def _createServer(self, handler, withv6=False):
@@ -975,7 +977,7 @@ class ServeFile():
 		else:
 			pwPart = ""
 			if self.auth:
-				pwPart = base64.b64decode(self.auth) + "@"
+				pwPart = base64.b64decode(self.auth).decode() + "@"
 			for ip in ips:
 				if ":" in ip:
 					ip = "[%s]" % ip
@@ -1091,7 +1093,7 @@ class AuthenticationHandler():
 			errorMsg = "<html><head><title>401 - Unauthorized</title></head><body><h1>401 - Unauthorized</h1></body></html>"
 			self.send_header("Content-Length", str(len(errorMsg)))
 			self.end_headers()
-			self.wfile.write(errorMsg)
+			self.wfile.write(errorMsg.encode())
 
 
 def main():