diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7bac250..0d72703 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -14,12 +14,12 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { os: ubuntu-latest, version: '1.0', arch: x64}
-          - { os: ubuntu-latest, version: '1.6', arch: x64}
+#          - { os: ubuntu-latest, version: '1.0', arch: x64}
+#          - { os: ubuntu-latest, version: '1.6', arch: x64}
           - { os: ubuntu-latest, version: '1', arch: x64}
-          - { os: ubuntu-latest, version: 'nightly', arch: x64}
-          - { os: windows-latest, version: '1', arch: x64}
-          - { os: macOS-latest, version: '1', arch: x64}
+#          - { os: ubuntu-latest, version: 'nightly', arch: x64}
+ #         - { os: windows-latest, version: '1', arch: x64}
+  #        - { os: macOS-latest, version: '1', arch: x64}
 
     steps:
       - uses: actions/checkout@v2