diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ac169a14..fc391e3a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,8 +44,8 @@ jobs:
           - version: 14
 
         pair:
-          - elixir: 1.17.2
-            otp: 25.3
+          - elixir: 1.11.4
+            otp: 23.3.3
         include:
           - pg:
               version: 14
diff --git a/mix.exs b/mix.exs
index 14495d23..d1d3f029 100644
--- a/mix.exs
+++ b/mix.exs
@@ -8,7 +8,7 @@ defmodule Postgrex.Mixfile do
     [
       app: :postgrex,
       version: @version,
-      elixir: "~> 1.17",
+      elixir: "~> 1.11",
       deps: deps(),
       name: "Postgrex",
       description: "PostgreSQL driver for Elixir",