diff --git a/pmml/requirements.txt b/pmml/requirements.txt
index e625da6..7566551 100644
--- a/pmml/requirements.txt
+++ b/pmml/requirements.txt
@@ -1,6 +1,6 @@
 matplotlib==3.9.2
 numpy==1.26.4
 pandas==2.2.3
-pypmml==0.9.17
+pypmml==1.5.4
 scikit-learn==1.5.0
 sklearn2pmml==0.110.0