diff --git a/requirements.txt b/requirements.txt
index 7c56bcc..82363c0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bitarray==2.6.0
-clkhash==0.17.0
+clkhash==0.18.1
 Cython==0.29.32
 hypothesis==6.9.2
 pytest>=7.0.1