diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a2391e3..0fd3f45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,13 +9,13 @@ jobs:
     name: Ex${{matrix.elixir}}/OTP${{matrix.otp}}
     strategy:
       matrix:
-        elixir: ["1.15.8", "1.16.3", "1.17.3", "1.18.2"]
-        otp: ["25.3.2", "26.2.5", "27.2.4"]
-        exclude:
-          - elixir: "1.15.8"
-            otp: "27.2.4"
-          - elixir: "1.16.3"
-            otp: "27.2.4"
+        elixir: ["1.18.4", "1.19.0-rc.0"]
+        otp: ["27.3.4", "28.0.0"]
+        # exclude:
+        #   - elixir: "1.18.4"
+        #     otp: "28.0.0"
+        #   - elixir: "1.16.3"
+        #     otp: "27.2.4"
     steps:
       - uses: actions/checkout@v4
       - uses: erlef/setup-beam@v1