diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index e498252b..e78526fb 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -53,7 +53,19 @@ jobs:
       - name: Compile
         run: rebar3 as test compile
       - name: ExUnit
-        run: mix test --no-start test/otel_tests.exs test/otel_metric_tests.exs
+        run: mix test --no-start --cover test/otel_tests.exs test/otel_metric_tests.exs
+      - uses: codecov/codecov-action@v3
+        if: ${{ always() }}
+        with:
+          file: opentelemetry.covertool.xml
+          env_vars: OTP_VERSION,ELIXIR_VERSION
+          flags: sdk,elixir
+      - uses: codecov/codecov-action@v3
+        if: ${{ always() }}
+        with:
+          file: opentelemetry_api.covertool.xml
+          env_vars: OTP_VERSION,ELIXIR_VERSION
+          flags: api,elixir
 
   api_tests:
     runs-on: ${{ matrix.os }}
diff --git a/mix.exs b/mix.exs
index 639eccb9..982a5b79 100644
--- a/mix.exs
+++ b/mix.exs
@@ -6,12 +6,17 @@ defmodule OtelElixirTests.MixProject do
       app: :otel_elixir_tests,
       version: "0.1.0",
       deps: deps(),
-      elixirc_paths: elixirc_paths(Mix.env())
+      elixirc_paths: elixirc_paths(Mix.env()),
+      test_coverage: [tool: :covertool, include_apps: [:opentelemetry, :opentelemetry_api]]
     ]
   end
 
   def deps do
     [
+      {:covertool,
+       git: "https://github.com/albertored/covertool.git",
+       branch: "add-include-apps-mix",
+       only: :test},
       {:opentelemetry, path: "apps/opentelemetry", only: :test, override: true},
       {:opentelemetry_api, path: "apps/opentelemetry_api", only: :test, override: true},
       {:opentelemetry_semantic_conventions,
diff --git a/rebar.config b/rebar.config
index dc4f2f51..cd4c663e 100644
--- a/rebar.config
+++ b/rebar.config
@@ -65,7 +65,7 @@
 
 {cover_enabled, true}.
 {cover_export_enabled, true}.
-{covertool, [{coverdata_files, ["ct.coverdata"]}]}.
+{covertool, [{coverdata_files, ["ct.coverdata", "eunit.coverdata"]}]}.
 {cover_excl_apps, [opentelemetry_api_experimental, opentelemetry_experimental]}.
 {cover_excl_mods, [opentelemetry_exporter_trace_service_pb, opentelemetry_trace_service,
                    opentelemetry_zipkin_pb, opentelemetry_exporter_metrics_service_pb,