diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index be49de2..eb9b06a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,10 +7,6 @@ on:
 
 env:
   TOIT_VERSION: v2.0.0-alpha.100
-  # Will be set in the 'Setup constants' step
-  TOIT_URL:
-  # Will be set in the 'Setup constants' step
-  DOWNLOAD_DIR:
 
 jobs:
   build:
@@ -23,72 +19,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup constants
-        shell: bash
-        run: |
-          export DOWNLOAD_DIR="${{ github.workspace }}/downloads"
-          echo "DOWNLOAD_DIR=$DOWNLOAD_DIR" >> $GITHUB_ENV
-          if [[ "$RUNNER_OS" = "Linux" ]]; then
-            TOIT_FILE=toit-linux.tar.gz
-            echo "TOIT_EXEC=$DOWNLOAD_DIR/toit/bin/toit.run" >> $GITHUB_ENV
-            echo "TPKG_EXEC=$DOWNLOAD_DIR/toit/bin/toit.pkg" >> $GITHUB_ENV
-          elif [[ "$RUNNER_OS" = "macOS" ]]; then
-            TOIT_FILE=toit-macos.tar.gz
-            echo "TOIT_EXEC=$DOWNLOAD_DIR/toit/bin/toit.run" >> $GITHUB_ENV
-            echo "TPKG_EXEC=$DOWNLOAD_DIR/toit/bin/toit.pkg" >> $GITHUB_ENV
-          elif [[ "$RUNNER_OS" = "Windows" ]]; then
-            TOIT_FILE=toit-windows.tar.gz
-            echo "TOIT_EXEC=$DOWNLOAD_DIR/toit/bin/toit.run.exe" >> $GITHUB_ENV
-            echo "TPKG_EXEC=$DOWNLOAD_DIR/toit/bin/toit.pkg.exe" >> $GITHUB_ENV
-          else
-            echo "UNSUPPORTED RUNNER: $RUNNER_OS"
-            exit 1
-          fi
-
-          echo "TOIT_URL=https://github.com/toitlang/toit/releases/download/$TOIT_VERSION/$TOIT_FILE" >> $GITHUB_ENV
-
-      # Fetch the dependencies. Different for each platform.
-      - name: Install dependencies - Linux
-        if: runner.os == 'Linux'
-        run: |
-          sudo apt-get update
-          sudo apt-get install ninja-build
-          ninja --version
-          cmake --version
-      - name: Install dependencies - macOS
-        if: runner.os == 'macOS'
-        run: |
-          brew install ninja
-          ninja --version
-          cmake --version
-      - name: Install dependencies - Windows
-        if: runner.os == 'Windows'
-        run: |
-          choco install ninja
-          ninja --version
-          cmake --version
-
-      - uses: suisei-cn/actions-download-file@v1
-        name: Download Toit
+      - uses: toitlang/action-setup@v1
         with:
-          url: ${{ env.TOIT_URL }}
-          target: ${{ env.DOWNLOAD_DIR }}
-
-      - name: Extract Toit
-        shell: bash
-        run: |
-          cd "$DOWNLOAD_DIR"
-          tar x -f *.tar.gz
-
-      - name: Run cmake
-        shell: bash
-        run: |
-          make rebuild-cmake
-          cmake "-DTOIT_EXEC=$TOIT_EXEC" "-DTPKG_EXEC=$TPKG_EXEC" build
-
-      - name: Install packages
-        run: |
-          make install-pkgs
+          toit-version: ${{ env.TOIT_VERSION }}
 
       - name: Test
         run: |
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f1bf07a..9cfd844 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@
 
 cmake_minimum_required(VERSION 3.23)
 
-project(certificate_roots)
+project(certificate_roots NONE)
 
 enable_testing()
 add_subdirectory(tests)
diff --git a/Makefile b/Makefile
index 903f99c..16aa587 100644
--- a/Makefile
+++ b/Makefile
@@ -9,10 +9,10 @@ build/CMakeCache.txt:
 	$(MAKE) rebuild-cmake
 
 install-pkgs: rebuild-cmake
-	(cd build && ninja install-pkgs)
+	cmake --build build --target install-pkgs
 
 test: install-pkgs rebuild-cmake
-	(cd build && ninja check)
+	cmake --build build --target check
 
 # We rebuild the cmake file all the time.
 # We use "glob" in the cmakefile, and wouldn't otherwise notice if a new
@@ -20,6 +20,6 @@ test: install-pkgs rebuild-cmake
 # It takes <1s on Linux to run cmake, so it doesn't hurt to run it frequently.
 rebuild-cmake:
 	mkdir -p build
-	(cd build && cmake .. -G Ninja)
+	cmake -B build
 
 .PHONY: all test rebuild-cmake install-pkgs
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 263aa34..5de877b 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -4,8 +4,8 @@
 
 file(GLOB TESTS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*_test.toit" "*-test.toit" "*_test_slow.toit" "*-test-slow.toit")
 
-set(TOIT_EXEC "toit.run" CACHE FILEPATH "The executable used to run the tests")
-set(TPKG_EXEC "toit.pkg" CACHE FILEPATH "The executable used to install the packages")
+set(TOIT_EXEC "toit.run${CMAKE_EXECUTABLE_SUFFIX}" CACHE FILEPATH "The executable used to run the tests")
+set(TPKG_EXEC "toit.pkg${CMAKE_EXECUTABLE_SUFFIX}" CACHE FILEPATH "The executable used to install the packages")
 set(TEST_TIMEOUT 40 CACHE STRING "The maximal amount of time each test is allowed to run")
 set(TEST_TIMEOUT_SLOW 200 CACHE STRING "The maximal amount of time each test is allowed to run")
 
@@ -21,7 +21,7 @@ ProcessorCount(NUM_CPU)
 
 add_custom_target(
   check
-  COMMAND ${CMAKE_CTEST_COMMAND} -j${NUM_CPU} -T test --output-on-failure
+  COMMAND ${CMAKE_CTEST_COMMAND} -j${NUM_CPU} -T test --output-on-failure -C Debug
   USES_TERMINAL
 )