diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 765c54f..348f763 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,6 +10,9 @@ jobs:
       matrix:
         otp: ['21','23']
         elixir: ['1.10', '1.11']
+        include:
+          - otp: '26'
+            elixir: '1.15'
         global-mock: [true, false]
     env:
       MIX_ENV: test