diff --git a/requirements.txt b/requirements.txt
index 96238c0..bb3c017 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 tornado==6.4.1
-isodate==0.7.2
+isodate==0.6.1
 pytest==8.3.3
 GitPython==3.1.43
\ No newline at end of file