diff --git a/requirements-lock.txt b/requirements-lock.txt
index edd8d1b..7fde3f8 100644
--- a/requirements-lock.txt
+++ b/requirements-lock.txt
@@ -5,7 +5,7 @@
 numpy==2.4.6
 matplotlib==3.10.9
 scipy==1.17.1
-pytest==9.0.3
+pytest==9.1.0
 reportlab==4.5.1
 
 # Neural LLM experiment dependencies (required for real_lm_experiment.py):