diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8cae0c1..1d41606 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,9 +20,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - pair:
-              elixir: '1.11'
-              otp: '23.0'
           - pair:
               elixir: '1.12'
               otp: '24.0'