diff --git a/.formatter.exs b/.formatter.exs
index d2cda26..90c80fe 100644
--- a/.formatter.exs
+++ b/.formatter.exs
@@ -1,4 +1,5 @@
 # Used by "mix format"
 [
-  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"],
+  import_deps: [:ecto]
 ]
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..a8f4753
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,84 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: Elixir ${{matrix.elixir}} / OTP ${{matrix.otp}}
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres
+        ports:
+        - 5432:5432
+        env:
+          POSTGRES_DB: dataloader_test
+          POSTGRES_PASSWORD: postgres
+
+    strategy:
+      matrix:
+        elixir:
+          - '1.10'
+          - '1.11'
+        otp:
+          - '22'
+          - '23'
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Set up Elixir
+      uses: erlef/setup-elixir@v1
+      with:
+        elixir-version: ${{ matrix.elixir }}
+        otp-version: ${{ matrix.otp }}
+
+    - name: Restore deps cache
+      uses: actions/cache@v2
+      with:
+        path: |
+          deps
+          _build
+        key: deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}-git-${{ github.sha }}
+        restore-keys: |
+          deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}
+          deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}
+
+    - name: Create dializer plts path
+      run: mkdir -p priv/plts
+
+    - name: Restore plts cache
+      uses: actions/cache@v2
+      with:
+        path: priv/plts
+        key: plts-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}-${{ github.sha }}
+        restore-keys: |
+          plts-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}
+          plts-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}
+
+    - name: Install package dependencies
+      run: mix deps.get
+
+    - name: Check code format
+      run: mix format --check-formatted
+
+    - name: Compile dependencies
+      run: mix compile
+      env:
+        MIX_ENV: test
+
+    - name: Run unit tests
+      run: |
+        mix ecto.setup
+        mix test
+      env:
+        MIX_ENV: test
+
+    - name: Run dialyzer
+      run: mix dialyzer
diff --git a/.gitignore b/.gitignore
index a48db45..d507d71 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,7 @@ dataloader-*.tar
 
 # Temporary files for e.g. tests.
 /tmp/
+
+# Ignore Dialyzer .plts files
+/priv/plts/*.plt
+/priv/plts/*.plt.hash
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index da6b32e..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-language: elixir
-elixir:
-  - 1.7
-otp_release:
-  - 20.1
-sudo: false
-services:
-  - postgresql
-notifications:
-  recipients:
-    - bruce.williams@cargosense.com
-env:
-  - MIX_ENV=test
-before_script:
-  - mix ecto.setup
diff --git a/config/test.exs b/config/test.exs
index d1dd09b..14a81e7 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -3,6 +3,7 @@ use Mix.Config
 config :dataloader, Dataloader.TestRepo,
   hostname: "localhost",
   username: "postgres",
+  password: "postgres",
   database: "dataloader_test",
   pool: Ecto.Adapters.SQL.Sandbox
 
diff --git a/mix.exs b/mix.exs
index 1f06534..e4fb1b3 100644
--- a/mix.exs
+++ b/mix.exs
@@ -8,13 +8,20 @@ defmodule Dataloader.Mixfile do
     [
       app: :dataloader,
       version: @version,
-      elixir: "~> 1.5",
+      elixir: "~> 1.10",
       start_permanent: Mix.env() == :prod,
       elixirc_paths: elixirc_paths(Mix.env()),
       package: package(),
       aliases: aliases(),
       deps: deps(),
-      docs: docs()
+      docs: docs(),
+      preferred_cli_env: [
+        dialyzer: :test
+      ],
+      dialyzer: [
+        plt_core_path: "priv/plts",
+        plt_add_apps: [:mix, :ecto, :ecto_sql]
+      ]
     ]
   end
 
@@ -57,7 +64,7 @@ defmodule Dataloader.Mixfile do
       {:ecto, ">= 3.4.3 and < 4.0.0", optional: true},
       {:ecto_sql, "~> 3.0", optional: true, only: :test},
       {:postgrex, "~> 0.14", only: :test, runtime: false},
-      {:dialyxir, "~> 0.5", only: :dev, runtime: false},
+      {:dialyxir, "~> 1.0.0", only: [:dev, :test], runtime: false},
       {:ex_doc, ">= 0.0.0", only: :dev, runtime: false}
     ]
   end
diff --git a/mix.lock b/mix.lock
index 5f6aaf9..f29a616 100644
--- a/mix.lock
+++ b/mix.lock
@@ -2,10 +2,11 @@
   "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [:mix], [], "hexpm", "4a0850c9be22a43af9920a71ab17c051f5f7d45c209e40269a1938832510e4d9"},
   "db_connection": {:hex, :db_connection, "2.2.0", "e923e88887cd60f9891fd324ac5e0290954511d090553c415fbf54be4c57ee63", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}], "hexpm", "bdf196feedfa6b83071e808b2b086fb113f8a1c4c7761f6eff6fe4b96aba0086"},
   "decimal": {:hex, :decimal, "1.8.1", "a4ef3f5f3428bdbc0d35374029ffcf4ede8533536fa79896dd450168d9acdf3c", [:mix], [], "hexpm", "3cb154b00225ac687f6cbd4acc4b7960027c757a5152b369923ead9ddbca7aec"},
-  "dialyxir": {:hex, :dialyxir, "0.5.1", "b331b091720fd93e878137add264bac4f644e1ddae07a70bf7062c7862c4b952", [:mix], [], "hexpm", "6c32a70ed5d452c6650916555b1f96c79af5fc4bf286997f8b15f213de786f73"},
+  "dialyxir": {:hex, :dialyxir, "1.0.0", "6a1fa629f7881a9f5aaf3a78f094b2a51a0357c843871b8bc98824e7342d00a5", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "aeb06588145fac14ca08d8061a142d52753dbc2cf7f0d00fc1013f53f8654654"},
   "earmark": {:hex, :earmark, "1.4.3", "364ca2e9710f6bff494117dbbd53880d84bebb692dafc3a78eb50aa3183f2bfd", [:mix], [], "hexpm", "8cf8a291ebf1c7b9539e3cddb19e9cef066c2441b1640f13c34c1d3cfc825fec"},
   "ecto": {:hex, :ecto, "3.4.5", "2bcd262f57b2c888b0bd7f7a28c8a48aa11dc1a2c6a858e45dd8f8426d504265", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "8c6d1d4d524559e9b7a062f0498e2c206122552d63eacff0a6567ffe7a8e8691"},
   "ecto_sql": {:hex, :ecto_sql, "3.4.4", "d28bac2d420f708993baed522054870086fd45016a9d09bb2cd521b9c48d32ea", [:mix], [{:db_connection, "~> 2.2", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.4.3", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.3.0 or ~> 0.4.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.15.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.0", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "edb49af715dd72f213b66adfd0f668a43c17ed510b5d9ac7528569b23af57fe8"},
+  "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "ex_doc": {:hex, :ex_doc, "0.21.2", "caca5bc28ed7b3bdc0b662f8afe2bee1eedb5c3cf7b322feeeb7c6ebbde089d6", [:mix], [{:earmark, "~> 1.3.3 or ~> 1.4", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "f1155337ae17ff7a1255217b4c1ceefcd1860b7ceb1a1874031e7a861b052e39"},
   "makeup": {:hex, :makeup, "1.0.0", "671df94cf5a594b739ce03b0d0316aa64312cee2574b6a44becb83cd90fb05dc", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "a10c6eb62cca416019663129699769f0c2ccf39428b3bb3c0cb38c718a0c186d"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.14.0", "cf8b7c66ad1cff4c14679698d532f0b5d45a3968ffbcbfd590339cb57742f1ae", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "d4b316c7222a85bbaa2fd7c6e90e37e953257ad196dc229505137c5e505e9eff"},
diff --git a/test/dataloader/ecto/limit_query_test.exs b/test/dataloader/ecto/limit_query_test.exs
index acea22f..ab995c9 100644
--- a/test/dataloader/ecto/limit_query_test.exs
+++ b/test/dataloader/ecto/limit_query_test.exs
@@ -33,7 +33,7 @@ defmodule Dataloader.LimitQueryTest do
     |> having(count() >= ^n)
     |> order_by(^order_by)
     |> limit(^limit)
-    |> preload([likes: :user])
+    |> preload(likes: :user)
   end
 
   defp query(schema, %{limit: limit, order_by: order_by}, test_pid) do