diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 60801ace..c420a976 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -37,6 +37,8 @@ jobs:
         run: tox
 
   test_cygwin:
+    # disabled due to lack of Rust support pypa/setuptools#3921
+    if: ${{ false }}
     strategy:
       matrix:
         python: