diff --git a/tests/REGISTERED_MARKERS b/tests/REGISTERED_MARKERS
index 8ae9c37b54..0870190c4b 100644
--- a/tests/REGISTERED_MARKERS
+++ b/tests/REGISTERED_MARKERS
@@ -1,4 +1,5 @@
 altcoin
+slow
 binance
 capricoin
 cardano