diff --git a/pyproject.toml b/pyproject.toml
index b341f03c7..ba0828ca5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
     'pyevtk',
 
     # Our packages from PyPi
-    'sympde == 0.19.2',
+    'sympde @ https://github.com/pyccel/sympde/archive/refs/heads/iterable_empty_unions.zip',
     'pyccel >= 2.0.1',
     'gelato == 0.12',