diff --git a/tests/filter_rules.rs b/tests/filter_rules.rs
index fc7513b..27a28fb 100644
--- a/tests/filter_rules.rs
+++ b/tests/filter_rules.rs
@@ -16,6 +16,7 @@ fn before_each() {
         .unwrap()
         .try_add_anchor(ANCHOR_NAME, pfctl::AnchorKind::Filter)
         .unwrap();
+    pfcli::flush_rules(ANCHOR_NAME, pfcli::FlushOptions::Rules).unwrap();
 }
 
 fn after_each() {