diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..1f737b5
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,62 @@
+name: continuous-integration
+on:
+  push:
+    branches:
+      - master
+      - release/*
+  pull_request:
+jobs:
+  unit-testing:
+    name: PHPUnit (PHP ${{ matrix.php-versions }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1']
+        coverage: ['pcov']
+        code-analysis: ['no']
+        include:
+          - php-versions: '7.1'
+            coverage: 'none'
+            code-analysis: 'yes'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP, with composer and extensions
+        uses: shivammathur/setup-php@v2 #https://github.com/shivammathur/setup-php
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: mbstring, dom, fileinfo, mysql, redis, opcache
+          coverage: ${{ matrix.coverage }}
+          tools: composer
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          # Use composer.json for key, if composer.lock is not committed.
+          # key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install Composer dependencies
+        run: composer install --no-progress --prefer-dist --optimize-autoloader
+
+      - name: Code Analysis(PHP CS-Fixer)
+        if: matrix.code-analysis == 'yes'
+        run: php vendor/bin/php-cs-fixer fix --dry-run --diff
+
+      - name: Code Analysis(PHPStan)
+        if: matrix.code-analysis == 'yes'
+        run: composer phpstan
+
+      - name: Test with phpunit
+        run: vendor/bin/phpunit --configuration tests/phpunit.xml --coverage-clover clover.xml
+
+      - uses: codecov/codecov-action@v2
+        if: matrix.coverage != 'none'
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 18560c8..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-language: php
-sudo: required
-php:
-  - 7.1
-  - 7.2
-  - 7.3
-  - 7.4
-
-env:
-  global:
-    - RUN_PHPCSFIXER="TRUE"
-    - RUN_PHPUNIT="TRUE"
-    - RUN_PHPSTAN="FALSE"
-  matrix:
-    - PREFER_LOWEST="" REPORT_COVERAGE="TRUE" WITH_COVERAGE="--coverage-clover=coverage.xml"
-    - PREFER_LOWEST="--prefer-lowest" REPORT_COVERAGE="FALSE" WITH_COVERAGE=""
-
-matrix:
-  include:
-    - name: 'PHP8'
-      dist: focal
-      php: 8.0
-      env:
-        - RUN_PHPCSFIXER="FALSE"
-        - REPORT_COVERAGE="FALSE"
-    - name: 'PHPStan'
-      php: 7.4
-      env:
-        - RUN_PHPCSFIXER="FALSE"
-        - RUN_PHPUNIT="FALSE"
-        - RUN_PHPSTAN="TRUE"
-        - REPORT_COVERAGE="FALSE"
-  fast_finish: true
-
-cache:
-  directories:
-    - $HOME/.composer/cache
-
-before_script:
-  - if [ $RUN_PHPCSFIXER == "FALSE" ]; then composer remove --no-update --dev friendsofphp/php-cs-fixer; fi
-  - composer update $PREFER_LOWEST
-
-script:
-  - if [ $RUN_PHPCSFIXER == "TRUE" ]; then php vendor/bin/php-cs-fixer fix --dry-run --diff; fi
-  - if [ $RUN_PHPUNIT == "TRUE" ]; then php vendor/bin/phpunit --configuration tests/phpunit.xml $WITH_COVERAGE; fi
-  - if [ $RUN_PHPSTAN == "TRUE" ]; then composer phpstan; fi
-
-after_success:
-  - if [ $REPORT_COVERAGE == "TRUE" ]; then bash <(curl -s https://codecov.io/bash); fi
diff --git a/phpstan.neon b/phpstan.neon
index d6dd4e5..a28ed62 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -2,5 +2,5 @@ parameters:
   level: 5
   ignoreErrors:
     -
-      message: '!Parameter #3 \$uri of method XMLWriter::startElementNs\(\) expects string, null given.!'
+      message: '!Parameter #3 \$namespace of method XMLWriter::startElementNs\(\) expects string, null given.!'
       path: lib/Writer.php