diff --git a/simulations/unity_poisson_sim/requirements.txt b/simulations/unity_poisson_sim/requirements.txt
index b4367e5..571c8f7 100644
--- a/simulations/unity_poisson_sim/requirements.txt
+++ b/simulations/unity_poisson_sim/requirements.txt
@@ -37,5 +37,5 @@ soupsieve==1.9
 sympy==1.3
 tornado==5.1.1
 traitlets==4.3.2
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
\ No newline at end of file