diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 16db5f6d..7ed5b15c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,8 +13,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 2.1
-          - 2.2
           - 2.3
           - 2.4
           - 2.5
@@ -26,6 +24,10 @@ jobs:
           - gemfiles/rbnacl.gemfile
         experimental: [false]
         include:
+          - ruby: 2.1
+            gemfile: 'gemfiles/rbnacl.gemfile'
+          - ruby: 2.2
+            gemfile: 'gemfiles/rbnacl.gemfile'
           - ruby: 2.7
             coverage: "true"
             gemfile: 'gemfiles/rbnacl.gemfile'