diff --git a/requirements-dev.txt b/requirements-dev.txt
index b395d26..859bf28 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,3 +2,4 @@ aider-chat==0.69.*
 playwright==1.49.*
 pytest-timeout>=2.2.0
 pytest>=7.0.0
+sympy>=1.13.3