diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 516a0750..440ec4f6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,10 +13,6 @@ jobs:
         with:
           args: "./"
 
-      - name: Run isort
-        uses: jamescurtin/isort-action@master
-        with:
-          configuration: --profile black
 
       - name: Check for modified files
         id: git-check
@@ -43,6 +39,13 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Install system dependencies for pyenv
+        run: |
+          sudo apt-get update
+          sudo apt-get install build-essential zlib1g-dev libffi-dev libssl-dev \
+                               libbz2-dev libreadline-dev libsqlite3-dev liblzma-dev \
+                               libncurses-dev tk-dev
+
       - name: Install python version
         uses: gabrielfalcao/pyenv-action@v13
         with:
@@ -88,6 +91,7 @@ jobs:
           pip install
           build
           --user
+          --break-system-packages
 
       - name: Build a binary wheel and a source tarball
         run: >-