diff --git a/requirements.txt b/requirements.txt
index 1dde745..dda37ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 tornado==6.4
 isodate==0.6.1
 pytest==8.0.1
-schwifty==2023.11.2
+schwifty==2024.1.1.post0
 Cerberus==1.3.5
 validator-collection==1.5.0