diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a8842516f3a..9d1815f22a3 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10019,6 +10019,10 @@ in modules // {
 
     buildInputs = with self; [ pexpect ];
 
+    prePatch = ''
+      substituteInPlace setup.py --replace "sympy==0.7.6" "sympy"
+    '';
+
     propagatedBuildInputs = with self; [
       argparse
       cython