diff --git a/internal/config/environment.go b/internal/config/environment.go
index 437b78f..baccdd7 100644
--- a/internal/config/environment.go
+++ b/internal/config/environment.go
@@ -206,7 +206,12 @@ func (id *InterpolatedDuration) UnmarshalYAML(value *yaml.Node) error {
 
 	duration, err := time.ParseDuration(str)
 	if err != nil {
-		return errors.Wrapf(err, "could not parse duration '%v',  line '%d'", str, value.Line)
+		nanoseconds, err := strconv.ParseInt(str, 10, 64)
+		if err != nil {
+			return errors.Wrapf(err, "could not parse duration '%v',  line '%d'", str, value.Line)
+		}
+
+		duration = time.Duration(nanoseconds)
 	}
 
 	*id = InterpolatedDuration(duration)