diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
new file mode 100644
index 00000000..8f99cd21
--- /dev/null
+++ b/.github/workflows/test.yaml
@@ -0,0 +1,36 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - "master"
+  pull_request:
+    branches:
+      - "master"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Conda environment from environment.yml
+        uses: mamba-org/provision-with-micromamba@v13
+        with:
+          environment-file: environment.yml
+
+      - name: Install package
+        run: |
+          pip install --no-deps .
+
+      - name: Rough CLI test for installed package
+        run: |
+          imperics --help
+
+      - name: Test with pytest
+        run: |
+          pytest -v -m "not imperics_shareddir"
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
deleted file mode 100644
index 59b5b5e4..00000000
--- a/.gitlab-ci.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-image: docker:latest
-services:
-- docker:dind
-
-stages:
-- build
-- test
-- release
-
-variables:
-  CONTAINER_TEST_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
-  CONTAINER_RELEASE_IMAGE_GITLAB: $CI_REGISTRY_IMAGE:latest
-  CONTAINER_RELEASE_IMAGE_GCR: $GCR_HOST/$GCS_PROJECTID/private/imperics:latest
-
-before_script:
-- docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-
-build:
-  stage: build
-  script:
-  - docker pull $CI_REGISTRY_IMAGE:latest || true
-  - docker build --tag $CONTAINER_TEST_IMAGE .
-  - docker run $CONTAINER_TEST_IMAGE /bin/bash -c 'conda list -n impact-env'
-  - docker push $CONTAINER_TEST_IMAGE
-
-test-cli:
-  stage: test
-  script:
-  - docker pull $CONTAINER_TEST_IMAGE
-  - docker run $CONTAINER_TEST_IMAGE imperics --help
-
-test-pytest:
-  stage: test
-  script:
-  - docker pull $CONTAINER_TEST_IMAGE
-  - docker run $CONTAINER_TEST_IMAGE /bin/bash -c 'cd /opt/src/app; pytest -v -m "not imperics_shareddir" /opt/src/app'
-
-release-docker-gitlab:
-  stage: release
-  script:
-  - docker pull $CONTAINER_TEST_IMAGE
-  - docker tag $CONTAINER_TEST_IMAGE $CONTAINER_RELEASE_IMAGE_GITLAB
-  - docker push $CONTAINER_RELEASE_IMAGE_GITLAB
-  only:
-  - master
-
-release-docker-google:
-  stage: release
-  script:
-  - docker pull $CONTAINER_TEST_IMAGE
-  - cat $GCR_KEY | docker login -u _json_key --password-stdin https://$GCR_HOST
-  - docker tag $CONTAINER_TEST_IMAGE $CONTAINER_RELEASE_IMAGE_GCR
-  - docker push $CONTAINER_RELEASE_IMAGE_GCR
-  only:
-  - master