diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..ba0b4b6
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        emacs-version:
+          - 26.1
+          - 26.2
+          - 26.3
+          - 27.1
+          - 27.2
+          - 28.1
+          - snapshot
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: jcs090218/setup-emacs@master
+      with:
+        version: ${{ matrix.emacs-version }}
+
+    - uses: actions/setup-node@v1
+      with:
+        node-version: '16'
+
+    - uses: emacs-eask/setup-eask@master
+      with:
+        version: 'snapshot'
+
+    - name: Run tests
+      run: 'make ci'
diff --git a/.gitignore b/.gitignore
index 433da84..65d6476 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
-.cask
+.eask
+/dist
 *.elc
diff --git a/Cask b/Cask
deleted file mode 100644
index 81bf8f2..0000000
--- a/Cask
+++ /dev/null
@@ -1,12 +0,0 @@
-(source gnu)
-(source melpa)
-
-(package-file "lsp-haskell.el")
-
-(development
- (depends-on "f")
- (depends-on "ecukes")
- (depends-on "ert-runner")
- (depends-on "el-mock")
- (depends-on "spinner")
- (depends-on "haskell-mode"))
diff --git a/Eask b/Eask
new file mode 100644
index 0000000..a3baf5c
--- /dev/null
+++ b/Eask
@@ -0,0 +1,21 @@
+(package "lsp-haskell"
+         "1.0"
+         "Haskell support for lsp-mode")
+
+(package-file "lsp-haskell.el")
+
+(source "gnu")
+(source "melpa")
+
+(depends-on "emacs" "24.3")
+(depends-on "lsp-mode")
+
+(development
+ (depends-on "f")
+ (depends-on "ecukes")
+ (depends-on "ert-runner")
+ (depends-on "el-mock")
+ (depends-on "spinner")
+ (depends-on "haskell-mode"))
+
+(setq network-security-level 'low)  ; see https://github.com/jcs090218/setup-emacs-windows/issues/156#issuecomment-932956432
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8a52785
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,26 @@
+SHELL=/usr/bin/env bash
+
+EMACS ?= emacs
+EASK ?= eask
+
+ci: build compile checkdoc lint
+
+build:
+	$(EASK) package
+	$(EASK) install
+
+compile:
+	@echo "Compiling..."
+	$(EASK) compile
+
+checkdoc:
+	$(EASK) checkdoc
+
+lint:
+	@echo "package linting..."
+	$(EASK) lint
+
+clean:
+	$(EASK) clean-all
+
+.PHONY : test compile checkdoc lint clean tag