diff --git a/.Rbuildignore b/.Rbuildignore
index f6ac482..94b7df9 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -14,3 +14,4 @@
 ^.gitlab-ci
 ^CLAUDE.md
 ^.claude
+^codecov\.yml$
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000..770bdd2
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,17 @@
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 2%
+        base: auto
+        branches:
+          - master
+          - main
+        informational: true
+    patch:
+      default:
+        target: auto
+        threshold: 0.5%
+        base: auto
+        informational: true