diff --git a/pyproject.toml b/pyproject.toml
index a9f3c5bd8..1cf93ae01 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ dependencies = [
     "pandas >= 2.0.0, < 3",
     "xarray >=2024.2.0, <2026.2", # CalVer: allow through next calendar year
     # Optimization and data handling
-    "linopy >= 0.5.1, < 0.6", # Widened from patch pin to minor range
+    "linopy >=0.5.1, <0.7", # Widened from patch pin to minor range
     "netcdf4 >=1.6.1, <1.7.5",  # 1.7.4 missing wheels, revert to < 2 later
     # Utilities
     "pyyaml >= 6.0.0, < 7",