diff --git a/jupyter_kernel_singular/kernel.py b/jupyter_kernel_singular/kernel.py
index c06a725..eaba566 100644
--- a/jupyter_kernel_singular/kernel.py
+++ b/jupyter_kernel_singular/kernel.py
@@ -1,18 +1,12 @@
 from ipykernel.kernelbase import Kernel
 
-from subprocess import check_output
-from os import unlink, path
-
 import base64
-import imghdr
 import re
 import signal
-import urllib
 import pexpect
 from pexpect import replwrap, EOF, which
 
-from ipykernel.comm import Comm
-from ipykernel.comm import CommManager
+#from ipykernel.comm import CommManager
 
 import sys
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..5232008
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,7 @@
+[build-system]
+requires = [
+    'setuptools',
+    'jupyter_client',
+    'ipython',
+]
+build-backend = "setuptools.build_meta"