diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4b3779c..82de50c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,7 @@ jobs:
       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