diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index fbee5a7d..9a03fc8b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -11,8 +11,8 @@ jobs:
     name: Build, test, and format
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x, 1.20.x]
-        platform: [ubuntu-latest, macos-latest, windows-latest]
+        go-version: ['1.20.x']
+        platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2