diff --git a/pyproject.toml b/pyproject.toml
index 6bd09f3..5a6be5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "numcodecs-combinators[xarray]~=0.2.13",
     "numcodecs-observers~=0.1.2",
     "numcodecs-replace==0.1.0",
-    "numcodecs-safeguards==0.1.0b5",
+    "numcodecs-safeguards==0.1.0b6",
     "numcodecs-wasm==0.2.2",
     "numcodecs-wasm-bit-round==0.4.0",
     "numcodecs-wasm-ebcc==0.3.1a0",