diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index a826375..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,144 +0,0 @@
-version: 2.1
-
-jobs:
-  build:
-    docker:
-      - image: cimg/elixir:1.15.5-erlang-26.0.2
-        environment:
-          MIX_ENV: test
-    steps:
-      - checkout
-      - run:
-          name: Install tools
-          command: |
-            mix local.hex --force && \
-            mix local.rebar --force
-      - restore_cache:
-          keys:
-            - v2-mix-cache-{{ .Branch }}-{{ checksum "mix.lock" }}
-            - v2-mix-cache-{{ .Branch }}
-            - v2-mix-cache
-      - run:
-          name: Get dependencies
-          command: mix deps.get
-      - save_cache:
-          key: v2-mix-cache-{{ .Branch }}-{{ checksum "mix.lock" }}
-          paths:
-            - deps
-      - restore_cache:
-          keys:
-            - v4-build-cache-{{ .Branch }}
-            - v4-build-cache
-      - run:
-          name: Compile
-          command: mix do deps.compile, compile --warnings-as-errors, dialyzer --plt
-      - save_cache:
-          key: v4-build-cache-{{ .Branch }}
-          paths:
-            - _build
-      - persist_to_workspace:
-          root: ~/
-          paths:
-            - .mix
-            - project/_build
-            - project/deps
-
-  test:
-    docker:
-      - image: cimg/elixir:1.15.5-erlang-26.0.2
-        environment:
-          MIX_ENV: test
-      - image: cimg/postgres:14.6
-    steps:
-      - checkout
-      - attach_workspace:
-          at: ~/
-      - run:
-          name: Run tests
-          command: mix test --cover --export-coverage default
-      - run:
-          name: Check coverage
-          command: mix test.coverage
-      - store_test_results:
-          path: /tmp/test/results.xml
-
-  lint:
-    docker:
-      - image: cimg/elixir:1.15.5-erlang-26.0.2
-        environment:
-          MIX_ENV: test
-    steps:
-      - checkout
-      - attach_workspace:
-          at: ~/
-      - run:
-          name: Check formatting
-          command: mix format --check-formatted --dry-run
-      - run:
-          name: Check for retired dependencies
-          command: mix hex.audit
-      - run:
-          name: Check unused dependencies
-          command: mix deps.unlock --check-unused
-      - run:
-          name: Check outdated dependencies
-          command: mix hex.outdated --within-requirements || true
-      - run:
-          name: Credo
-          command: mix credo --all
-      - run:
-          name: Dialyzer
-          command: mix dialyzer
-      - run:
-          name: Check documentation
-          command: mix doctor
-
-  security:
-    docker:
-      - image: cimg/elixir:1.15.5-erlang-26.0.2
-        environment:
-          MIX_ENV: test
-    steps:
-      - checkout
-      - attach_workspace:
-          at: ~/
-      - run:
-          name: Audit dependencies
-          command: mix deps.audit
-      - run:
-          name: Sobelow
-          command: mix sobelow --config
-
-  slscan:
-    docker:
-      - image: shiftleft/sast-scan:maven385
-    environment:
-      FETCH_LICENSE: "true"
-    working_directory: /tmp/shiftleft-scan
-    steps:
-      - checkout
-      - run:
-          name: Scan
-          command: scan --no-error
-      - store_artifacts:
-          path: reports
-          destination: sast-scan-reports
-
-workflows:
-  test:
-    jobs:
-      - build
-      - test:
-          requires:
-            - build
-      - lint:
-          requires:
-            - build
-      - security:
-          requires:
-            - build
-      - slscan:
-          filters:
-            branches:
-              only:
-                - master
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..a4ca890
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,96 @@
+name: CI
+on:
+  push:
+    branches: [main,master]
+  pull_request:
+    branches: [main,master]
+jobs:
+  test:
+    name: Test (Elixir ${{ matrix.elixir }} | OTP ${{ matrix.otp }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - elixir: 1.17.x
+            otp: 27
+            os: ubuntu-22.04
+          - elixir: 1.18.x
+            otp: 27
+            os: ubuntu-22.04
+          - elixir: 1.19.x
+            otp: 28
+            os: ubuntu-22.04
+    env:
+      MIX_ENV: test
+    steps:
+      - name: Setup Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{ matrix.elixir }}
+          otp-version: ${{ matrix.otp }}
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Cache dependencies
+        uses: actions/cache@v4
+        id: cache-deps
+        with:
+          path: |
+            deps
+            _build
+          key: |
+            mix-${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: |
+            mix-${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Compile
+        run: mix compile
+
+      - name: Check for unused packages
+        run: mix deps.unlock --check-unused
+
+      - run: mix format --check-formatted
+
+      - run: mix credo --strict
+
+      - run: mix dialyzer
+
+      - name: Check for abandonded packages
+        run: mix hex.audit
+
+      - name: Check outdated dependencies
+        run: mix hex.outdated --within-requirements || true
+
+      - name: Check for vulnerable packages
+        run: mix hex.audit
+
+      - name: Run tests
+        run: mix test
+
+      - name: Run tests (with coverage)
+        run: mix test --cover --export-coverage default
+
+      - name: Scan for security vulnerabilities
+        run: mix sobelow --exit --threshold medium
+
+  publish:
+    name: Publish (Dry Run)
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: erlef/setup-beam@v1
+        with:
+          elixir-version: 1.18
+          otp-version: 27
+      - name: Fetch dependencies
+        run: mix deps.get
+      - name: Compile
+        run: mix compile
+      - name: Publish package
+        env:
+          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}
+        run: mix hex.publish --organization ${{ vars.HEX_ORG }} --dry-run --replace --yes
diff --git a/test/zexbox/metrics/metric_handler_test.exs b/test/zexbox/metrics/metric_handler_test.exs
index 3844c83..94d7840 100644
--- a/test/zexbox/metrics/metric_handler_test.exs
+++ b/test/zexbox/metrics/metric_handler_test.exs
@@ -96,8 +96,7 @@ defmodule Zexbox.Metrics.MetricHandlerTest do
     test "captures and logs any exceptions", %{event: event, metadata: metadata} do
       assert capture_log(fn ->
                MetricHandler.handle_event(event, nil, metadata, nil)
-             end) =~
-               "Exception creating controller series: %KeyError"
+             end) =~ "Exception creating controller series: %BadMapError"
     end
   end
 end