diff --git a/packages/fileimport-service/requirements.txt b/packages/fileimport-service/requirements.txt
index 470c03697..34f4969ee 100644
--- a/packages/fileimport-service/requirements.txt
+++ b/packages/fileimport-service/requirements.txt
@@ -2,4 +2,4 @@ numpy-stl==3.1.1
 specklepy==2.9.1
 structlog==23.3.0
 numpy==1.26.3 # not directly required, pinned to avoid a vulnerability in <1.22.2
-python-util==1.6.2 # not directly required, peer dependency of numpy-stl
+python-util==1.2.1 # not directly required, peer dependency of numpy-stl