diff --git a/pyproject.toml b/pyproject.toml
index bd430b8..ab4661e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ requires-python = ">=3.11"
 dynamic = ["version"]
 dependencies = [
     "numpy>=1.26",
-    "klamath~=1.2",
+    "klamath~=1.4",
     ]