diff --git a/pyproject.toml b/pyproject.toml
index 98d80fb..41decbb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
     "astromodels",
     "threeml",
     "gammapy>=2.0",
-    "regions<0.12",
+    "regions<0.13",
 ]
 
 [project.optional-dependencies]