diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 82de50c..b9f9188 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,8 +9,6 @@ jobs:
     strategy:
       matrix:
         # https://hexdocs.pm/elixir/compatibility-and-deprecations.html
-        elixir-version: [1.17.x, 1.16.x, 1.15.x, 1.14.x, 1.13.x]
-        otp-version: [24.x, 25.x, 26.x, 27.x]
         include:
           - elixir-version: 1.17.x
             otp-version: 27.x