diff --git a/pyproject.toml b/pyproject.toml
index b2ce21e5..27f14d89 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ gmsh = [
   "meshwell~=1.0.7"
 ]
 klayout = ["klayout", "pyvis<=0.3.1", "vlsir", "vlsirtools"]
-luminescent = ["luminescent>=0.2.12,<0.4.0", "sortedcontainers"]
+luminescent = ["luminescent>=0.2.12,<1.2.0", "sortedcontainers"]
 maintainer = ["mypy", "tbump", "towncrier"]
 meow = [
   "meow-sim>=0.14.1,<0.15",