diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 684eeb7..5813782 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,36 +4,37 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main]
-
-env:
-  REBAR3-VERSION: 3.20.0
 
 jobs:
   check:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        otp: ['25.2.3', '24.3']
-    steps:
-      - uses: actions/checkout@v3
+        combo:
+        - otp-version: '25.2'
+          rebar3-version: '3.23.0'
+        - otp-version: '26.2'
+          rebar3-version: '3.23.0'
+        - otp-version: '27.2'
+          rebar3-version: '3.24.0'
+        - otp-version: '28.0'
+          rebar3-version: '3.25.0'
 
-      - uses: webfactory/ssh-agent@v0.7.0
-        with:
-          ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+    steps:
+      - uses: actions/checkout@v4
 
-      - uses: erlef/setup-beam@v1
+      - uses: erlef/setup-beam@v1.18
         with:
-          otp-version: ${{ matrix.otp }}
-          rebar3-version: ${{ env.REBAR3-VERSION }}
+          otp-version: ${{ matrix.combo.otp-version }}
+          rebar3-version: ${{ matrix.combo.rebar3-version }}
 
-      - uses: actions/cache@v3.2.6
+      - uses: actions/cache@v4
         id: rebar3-cache
         with:
           path: |
             ~/.cache/rebar3
             _build
-          key: ${{ runner.os }}-${{ matrix.otp }}-${{ env.REBAR3-VERSION }}-${{ hashFiles('rebar.lock') }}
+          key: ${{ runner.os }}-${{ runner.arch }}-${{ matrix.combo.otp-version }}-${{ matrix.combo.rebar3-version }}-${{ hashFiles('rebar.lock') }}
 
       - name: Compile
         run: |
diff --git a/rebar.config b/rebar.config
index ffb29d8..bebc970 100644
--- a/rebar.config
+++ b/rebar.config
@@ -5,7 +5,7 @@
 ]}.
 
 {project_plugins, [
-    {erlfmt, {git, "git@github.com:WhatsApp/erlfmt.git", {branch, "main"}}}
+    erlfmt
 ]}.
 {erlfmt, [write]}.
 
@@ -17,6 +17,10 @@
     ]}
 ]}.
 
+{dialyzer, [
+    {warnings, [no_unknown]}
+]}.
+
 {xref_ignores, [
     nct_util
 ]}.