diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 605e50953..0261f9767 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, macos-10.15, macos-11.0, windows-2016, windows-2019 ]
+        os: [ ubuntu-18.04, ubuntu-20.04, macos-10.15, macos-11.0, windows-2019 ]
         ruby: [ '1.8.7', '1.9.3', '2.0', jruby-1.7, jruby-9.0 ]
         architecture: [ default ]
         exclude:
@@ -25,15 +25,9 @@ jobs:
           - os: macos-11.0
             ruby: '1.8.7'
             architecture: default
-          - os: windows-2016
-            ruby: '1.8.7'
-            architecture: default
           - os: windows-2019
             ruby: '1.8.7'
             architecture: default
-          - os: windows-2016
-            ruby: 'jruby-1.7'
-            architecture: default
           - os: windows-2019
             ruby: 'jruby-1.7'
             architecture: default