diff --git a/requirements.txt b/requirements.txt
index e90047a..b06f5a3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 tornado==6.4
 isodate==0.6.1
 pytest==8.1.1
-schwifty==2024.1.1.post0
+schwifty==2024.4.0
 Cerberus==1.3.5
 validator-collection==1.5.0