diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db93f95..198dbd8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,16 +19,19 @@ jobs:
       matrix:
         os: [ubuntu-22.04]
         elixir_version: [1.15, 1.16, 1.17]
-        otp_version: [25, 26, 27]
+        otp_version: [ 25, 26, 27]
         exclude:
           - otp_version: 27
             elixir_version: 1.15
           - otp_version: 27
             elixir_version: 1.16
+
     steps:
       - uses: actions/checkout@v4
 
-      - uses: erlef/setup-beam@v1
+      - name: Set up Elixir
+        id: beam
+        uses: erlef/setup-beam@v1
         with:
           otp-version: ${{matrix.otp_version}}
           elixir-version: ${{matrix.elixir_version}}
@@ -44,8 +47,6 @@ jobs:
 
       - run: mix deps.get
 
-      - run: mix format --check-formatted
-
       - run: mix deps.unlock --check-unused
 
       - run: mix deps.compile
@@ -56,5 +57,84 @@ jobs:
 
       - run: mix test --warnings-as-errors --cover
 
+  dialyzer:
+    runs-on: ubuntu-22.04
+    env:
+      MIX_ENV: dev
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        id: beam
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: 1.16
+          otp-version: 26
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            deps
+            _build
+          key: deps-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: |
+            deps-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}
+
+      - run: mix deps.get
+
+      - name: Restore PLT cache
+        id: plt_cache_restore
+        uses: actions/cache/restore@v3
+        with:
+          key: |
+            plts-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: |
+            plts-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-
+          path: |
+            priv/plts
+
+      - name: Create PLTs
+        if: steps.plt_cache_restore.outputs.cache-hit != 'true'
+        run: mix dialyzer --plt
+
+      - name: Save PLT cache
+        id: plt_cache_save
+        if: steps.plt_cache_restore.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v3
+        with:
+          key: |
+            plts-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-${{ hashFiles('**/mix.lock') }}
+          path: |
+            priv/plts
+
       - name: Run dialyzer
-        run: mix dialyzer --format github
+        run: mix dialyzer --format github --format dialyxir
+
+  check_format:
+    runs-on: ubuntu-22.04
+    env:
+      MIX_ENV: dev
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        id: beam
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: 1.16
+          otp-version: 26
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            deps
+            _build
+          key: deps-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: |
+            deps-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}
+
+      - run: mix deps.get
+
+      - run: mix format --check-formatted
diff --git a/mix.exs b/mix.exs
index 51c711a..c3cd809 100644
--- a/mix.exs
+++ b/mix.exs
@@ -18,7 +18,13 @@ defmodule GraphqlMarkdown.MixProject do
       docs: docs(),
       package: package(),
       test_coverage: [summary: [threshold: 85]],
-      dialyzer: [plt_add_apps: [:mix]]
+      dialyzer: [
+        ignore_warnings: ".dialyzer.ignore-warnings",
+        list_unused_filters: true,
+        plt_add_apps: [:mix],
+        plt_file: {:no_warn, "priv/plts/project.plt"},
+        plt_core_path: "priv/plts/core.plt"
+      ]
     ]
   end
 
@@ -31,7 +37,7 @@ defmodule GraphqlMarkdown.MixProject do
   defp deps do
     [
       {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
-      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
+      {:dialyxir, "~> 1.4", only: [:dev], runtime: false},
       {:ex_doc, "~> 0.30", only: [:dev, :test], runtime: false},
       {:jason, "~> 1.4"}
     ]