diff --git a/requirements-lock.txt b/requirements-lock.txt
index 9c49c0e..ed22937 100644
--- a/requirements-lock.txt
+++ b/requirements-lock.txt
@@ -6,7 +6,7 @@
 numpy==2.4.5
 matplotlib==3.10.9
 scipy==1.17.1
-pytest==8.3.5
+pytest==9.0.3
 reportlab==4.5.1
 
 # Neural LLM experiment dependencies (required for real_lm_experiment.py):