diff --git a/.github/workflows/test-cde.yml b/.github/workflows/test-cde.yml
index 9a836721..6fdf96cf 100644
--- a/.github/workflows/test-cde.yml
+++ b/.github/workflows/test-cde.yml
@@ -24,10 +24,10 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
+        pip install wheel setuptools
         pip install nbsphinx==0.3.5 nbsphinx-link m2r ipython ipykernel sphinx-rtd-theme
         pip install future==0.17.1
         pip install unittest2==1.1.0
-        pip install playsound
         pip install -r requirements/development.txt
         pip install .
         cde data download
diff --git a/chemdataextractor/eval/evaluation.py b/chemdataextractor/eval/evaluation.py
index f9b811f6..738adfdc 100644
--- a/chemdataextractor/eval/evaluation.py
+++ b/chemdataextractor/eval/evaluation.py
@@ -26,7 +26,7 @@
 import sys
 import os
 import webbrowser
-from playsound import playsound
+# from playsound import playsound
 import pickle
 import pkg_resources
 import os
@@ -155,7 +155,7 @@ def eval(self):
                     print("    Updated: {}".format(record.updated))
                     if self.play_sound:
                         sound_file = pkg_resources.resource_filename('chemdataextractor', 'eval/sound.mp3')
-                        playsound(sound_file)
+                        # playsound(sound_file)
 
                     if not doc_opened and self.show_website:
                         webbrowser.open(doc[0].metadata.html_url)
@@ -272,7 +272,7 @@ def eval(self):
             if self.limits_reached:
                 if self.play_sound:
                     sound_end_file = pkg_resources.resource_filename('chemdataextractor', 'eval/sound_end.mp3')
-                    playsound(sound_end_file)
+                    # playsound(sound_end_file)
                 break
             print("")
         f.close()
diff --git a/chemdataextractor/relex/snowball.py b/chemdataextractor/relex/snowball.py
index 9bff86c7..a3f3f1fb 100644
--- a/chemdataextractor/relex/snowball.py
+++ b/chemdataextractor/relex/snowball.py
@@ -30,7 +30,7 @@
 import logging
 
 from os.path import basename
-from playsound import playsound
+# from playsound import playsound
 import pkg_resources
 
 log = logging.getLogger(__name__)
@@ -250,7 +250,7 @@ def train_from_sentence(self, s):
 
             if self.play_sound:
                 sound_file = pkg_resources.resource_filename('chemdataextractor', 'eval/sound.mp3')
-                playsound(sound_file)
+                # playsound(sound_file)
             res = six.moves.input("...: ").replace(' ', '')
             if res:
                 chosen_candidate_idx = res.split(',')
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..593aa4f5
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools", "wheel<0.33.0,>0.32.0"]
+build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index 5ab12c9c..fa9c29af 100644
--- a/setup.py
+++ b/setup.py
@@ -47,15 +47,14 @@
         'numpy<1.20; python_version >= "3.7.0"',
         "protobuf==3.*",
         # 'scipy',
-        "yaspin",
-        "deprecation",
-        "allennlp==0.9.0",
-        "tokenizers",
-        "scikit-learn==0.22.1",
-        "overrides==3.1.0",
-        "boto3==1.15.18",
-        "unittest2",
-        "playsound",
+        'yaspin',
+        'deprecation',
+        'allennlp==0.9.0',
+        'tokenizers',
+        'scikit-learn==0.22.1',
+        'overrides==3.1.0',
+        'boto3==1.15.18',
+        'unittest2',
     ],
     classifiers=[
         "Intended Audience :: Developers",