diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2713add..505e49e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,4 +27,10 @@ jobs:
         run: dotnet build --no-restore --configuration Release
 
       - name: Test
-        run: dotnet test --no-build --configuration Release --filter "FullyQualifiedName!~GcpSecretManager"
+        run: dotnet test --no-build --configuration Release --filter "FullyQualifiedName!~GcpSecretManager" --collect:"XPlat Code Coverage" --results-directory ./coverage
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          directory: ./coverage
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000..60b5460
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,16 @@
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 1%
+    patch:
+      default:
+        target: auto
+        threshold: 5%
+
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: false
+  hide_project_coverage: false