diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 000000000..b07361e52
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,5 @@
+coverage:
+  status:
+    project:
+      default:
+        threshold: 0.1%
diff --git a/jest.config.js b/jest.config.js
index 24da6a51e..a2bd7196f 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -11,5 +11,6 @@
 module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'node',
-  moduleDirectories: ['node_modules', './tools/src']
+  moduleDirectories: ['node_modules', './tools/src'],
+  collectCoverageFrom: ['tools/src/**']
 }