diff --git a/pyproject.toml b/pyproject.toml
index 3c1f7ae7..64a2638e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ spatial = [
     "jax==0.4.23",
     "jaxlib==0.4.23",
     "scvi-tools==1.0.4",
-    "scipy=1.12.0",
+    "scipy==1.12.0",
     "squidpy",
     "cell2location",
     "tangram-sc"