diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 02d7a1df..fb88ab04 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,8 +32,8 @@ jobs:
           # OOM when building tests
           # - { cabal: "3.4", os: windows-latest, ghc: "8.8.4"  }
           # - { cabal: "3.4", os: windows-latest, ghc: "8.10.4" }
-          # No cabal 3.4 for Windows as of 2021.03.05
-          - { cabal: "3.4", os: windows-latest,  ghc: "9.0.1"  }
+          # Too flaky:
+          # - { cabal: "3.4", os: windows-latest,  ghc: "9.0.1"  }
           # MacOS
           - { cabal: "3.2", os: macOS-latest,   ghc: "8.4.4"  }
           - { cabal: "3.2", os: macOS-latest,   ghc: "8.6.5"  }