diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d3c8f06..80309f9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['1.8.7', '1.9.2', '1.9.3', '2.0.0']
+        ruby-version: ['1.9.3', '2.0.0']
 
     steps:
     - uses: actions/checkout@v2