diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9eb85fb..3896453 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,11 +13,14 @@ jobs:
 
     strategy:
       matrix:
-        versions:
+        otp: "24"
+        elixir: "1.14"
+        runtime_config: [true, false]
+
+        include:
           - otp: "20"
             elixir: "1.6"
-          - otp: "24"
-            elixir: "1.14"
+            runtime_config: false
 
     env:
       MIX_ENV: test
@@ -28,11 +31,13 @@ jobs:
       - name: Set up Elixir environment
         uses: erlef/setup-beam@v1
         with:
-          elixir-version: ${{ matrix.versions.elixir }}
-          otp-version: ${{ matrix.versions.otp }}
+          elixir-version: ${{ matrix.elixir }}
+          otp-version: ${{ matrix.otp }}
 
       - name: Install dependencies
         run: mix deps.get --only test
 
       - name: Run tests
-        run: mix test
\ No newline at end of file
+        run: mix test
+        env:
+          STATIX_TEST_RUNTIME_CONFIG: ${{ matrix.runtime_config }}
\ No newline at end of file
diff --git a/test/statix_test.exs b/test/statix_test.exs
index 6528f1a..6446b70 100644
--- a/test/statix_test.exs
+++ b/test/statix_test.exs
@@ -1,4 +1,4 @@
-runtime_config? = System.get_env("STATIX_TEST_RUNTIME_CONFIG") in ["1", "true"]
+runtime_config? = IO.inspect(System.get_env("STATIX_TEST_RUNTIME_CONFIG"), label: "STATIX_TEST_RUNTIME_CONFIG") in ["1", "true"]
 
 defmodule StatixTest do
   use Statix.TestCase