diff --git a/manimlib/imports.py b/manimlib/imports.py
index 25396b9f..9bf11cd5 100644
--- a/manimlib/imports.py
+++ b/manimlib/imports.py
@@ -100,6 +100,7 @@ import re
 import string
 import sys
 import math
+import sympy
 
 from PIL import Image
 from colour import Color