diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3f4fa36..d84b743 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,26 +20,25 @@ jobs:
           # OTP 24.2 is the earliest available on ubuntu-22.04.
           # Elixir 1.12 is the earliest version compatible with OTP 24.
           - elixir: "1.12"
-            otp: "24.2"
+            otp: "24"
 
           # Latest versions.
-          - elixir: "1.18"
-            otp: "27.2"
+          - elixir: "1.19"
+            otp: "28"
             lint: lint
             coverage: coverage
     steps:
       - name: Check out this repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Erlang and Elixir
         uses: erlef/setup-beam@v1
         with:
           otp-version: ${{matrix.otp}}
           elixir-version: ${{matrix.elixir}}
-          version-type: strict
 
       - name: Cache Mix dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v5
         id: cache-deps
         with:
           path: |