diff --git a/v2/pkg/protocols/common/hosterrorscache/hosterrorscache.go b/v2/pkg/protocols/common/hosterrorscache/hosterrorscache.go
index 5067df90..e529b05e 100644
--- a/v2/pkg/protocols/common/hosterrorscache/hosterrorscache.go
+++ b/v2/pkg/protocols/common/hosterrorscache/hosterrorscache.go
@@ -127,7 +127,7 @@ func (c *Cache) MarkFailed(value string, err error) {
 	_ = c.failedTargets.Set(finalValue, numberOfErrorsValue+1)
 }
 
-var checkErrorRegexp = regexp.MustCompile(`(no address found for host|Client\.Timeout exceeded while awaiting headers|could not resolve host)`)
+var checkErrorRegexp = regexp.MustCompile(`(no address found for host|Client\.Timeout exceeded while awaiting headers|could not resolve host|connection refused)`)
 
 // checkError checks if an error represents a type that should be
 // added to the host skipping table.