diff --git a/.codecov.yml b/.codecov.yml
index 95f6a33..33c74da 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -1,5 +1,5 @@
 coverage:
-  require_ci_to_pass: false
+  range: 30..100
 ignore:
   - "examples/**"
   - "**/stringers.go"
diff --git a/backoff.go b/backoff.go
index faa5029..f603270 100644
--- a/backoff.go
+++ b/backoff.go
@@ -35,3 +35,13 @@ func (backoff BackoffStrategy) Do(consecutiveBackoffs uint) {
 		time.Sleep(sleep)
 	}
 }
+
+func Uncovered() int {
+	a := 250 * 23
+A:
+	a *= 32
+	if a > 323 {
+		goto A
+	}
+	return a
+}