diff --git a/backend/requirements.txt b/backend/requirements.txt
index 969aca7ceb873705b2c9829450d05dbaf5c80550..a80c452f15b9e560e19ffdfee16ba3fc48a265a0 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,7 +1,7 @@
 docopt==0.6.2
 km3db==0.11.1
 km3io==0.29.0
-km3pipe==9.13.8
+km3pipe==9.13.9
 matplotlib==3.6.2
 numba==0.56.4
 numpy==1.23.4